Strana 35
35
9/2023
Tajemství vesmíru
průzkum měsíce Ganymedu
dobývání Sluneční soustavy
JUICE bude zkoumat tři
souputníky Jupitera – Europu,
Kallisto a Ganymed. Podle
předpokladů jich má planeta
celkově až 90, tedy nejvíc
ze všech členek Sluneční
soustavy.
V cíli
Při průzkumu Jupitero-
vých měsíců u nich sonda
provede 35 průletů a na-
konec se usadí na oběžné
dráze Ganymedu.
2 průlety
400km přiblížení
Europa
Zmíněný měsíc
může potenciálně
hostit život, proto
se JUICE zaměří
na pátrání po dů-
kazech existence
organických
molekul v ledu,
případně ve vod-
ní páře unikající
do vesmíru.
počet vědeckých
přístrojů na
palubě sondy,
od spektrálních
zobrazovacích ná-
strojů po radary
celková délka mise;
před dosažením cíle
automat nejprve
prolétne kolem Venuše
a dvakrát se vrátí
k Zemi
plocha solárních panelů,
které průzkumník
využívá; bude se pohy-
bovat v prostředí, kde je
sluneční svit až 30krát
slabší než na Zemi
teplota na oběžné dráze Jupitera;
oproti tomu při průletu u Venuše
čeká sondu žhavých 250 °C
počet lidí, kteří se zapojili do příprav-
ných prací; v režii ESA se na projektu
podílelo 23 zemí, 18 institucí a 83 sou-
kromých společností
21 průletů
200km přiblížení
Kallisto
Na souputníkovi
s nejstarším a krátery
nejvíc zjizveným
povrchem v celé naší
soustavě bude sonda
získávat detailnější
poznatky o prostředí
raného Jupiterova
systému a studovat
strukturu i chemické
složení tělesa.
400km přiblížení
12 průletů
Ganymed
Jako jediný přirozený
satelit ve Sluneční
soustavě generuje
vlastní magnetické
pole – a kromě něj se
JUICE zaměří na at-
mosféru měsíce, jeho
jádro, ale i výskyt
ledu a potenciální
existenci podpovr-
chového oceánu.
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
JANUS – optická kamera
bude zkoumat globální
i místní vlastnosti a procesy na
Europě a mapovat oblačnost
na Jupiteru
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
MAJIS – zobrazovací
spektrometr najde využití při
sledování mraků i atmosféry
Jupitera a při charakterizování ledu
a minerálů na povrchu jeho měsíců
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
GALA – laserový výškoměr
bude studovat slapové
deformace Ganymedu a topografii
povrchu ledových souputníků
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
J-MAG – magnetometr
prozkoumá magnetické pole
Jupitera i Ganymedu včetně toho,
jak se ovlivňují
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
RPWI – nástroj k měření
emisí rádiového záření
a plazmatického prostředí
v okolí sondy
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
UVS – ultrafialový
spektrograf bude
zaznamenávat UV záření měsíců,
aby bylo možné určit složení jejich
povrchu i atmosféry – včetně
vodních výtrysků na Europě
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
SWI – přístroj ke zkoumání
teplotní struktury, složení
a dynamiky Jupiterovy atmosféry
i povrchu ledových průvodců
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
RIME – radar schopný
proniknout devět kilometrů
pod led se zaměří na podpovrchovou
geologii i geofyziku ledových
měsíců a na zjišťování přítomnosti
vody
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
PEP – sada senzorů, které
mají charakterizovat
plazmatické prostředí Jupiterova
systému
70 71
FE AT URE PLANET NINE
PLANET NINE FE AT URE
FE AT URE JUICE
JUICE FEAT UR E
by
CATHERINE REGAN
Catherine is a PhD student at UCL’s Mullard
Space Science Laboratory.
JUICE, or the JUpiter ICy moons Explorer, is a European
Space Agency (ESA) mission that will travel to Jupiter and
its moon system with various instruments to help us
understand gas giant systems. It will be launching on 13
April 2023. Although it is an ESA-led mission, there have
been engineering contributions from NASA and JAXA
To help us understand our own Solar System and gas
giants across the Universe, JUICE will be studying Jupiter’s
environment, in addition to some of its icy moons. The
mission’s theme is ‘the emergence of habitable worlds
around gas giants’, as it is thought that moons such as
Europa are likely to contain signs of life.
JUICE will be the first spacecra ever to orbit a moon in
the outer Solar System, when it changes orbit from Jupiter
to Ganymede at the end of the nominal mission.
In 2024, the Europa Clipper will blast o, arriving at the
moon in 2030 to carry out further research.
The number of scientific instruments
carried by JUICE, from spectral imaging
tools to radar. Find out more about these
tools on the opposite page.
JANUS
This optical camera system will be
JUICE’s eyes, studying the features of
the moons, as well as the clouds of
Jupiter itself.
UV imaging spectrograph (UVS)
This will study the composition and
dynamics of the moon’s exospheres,
as well as Jupiter’s atmosphere and
beautiful aurorae.
Moons and Jupiter Imaging Spectrometer
(MAJIS)
This will be used to study the atmospheric
features of Jupiter, as well as the ice and
other minerals found on the Jovian moons.
Li-o!
Start here
All systems ready!
Lunar-Earth yby
A visit to Venus
Next stop... Earth?
Sub-millimeter Wave Instrument (SWI)
This will measure the atmosphere
of Jupiter and the exospheres of its
moons, to determine their structure and
composition.
JUICE Magnetometer (J-MAG)
This will allow JUICE to study the
magnetic fields of Jupiter and Ganymede,
and how they interact with each other.
Particle Environment Package (PEP)
This includes a number of sensors to
characterise the plasma* environment
of the Jupiter system.
Ganymede Laser Altimeter (GALA)
This tool will help to provide evidence
for subsurface oceans within the Jovian
moons. It will also map the topography of
the moons.
Radar for Icy Moons Exploration (RIME)
This ice-penetrating radar can see nine
kilometres below the surface, in order
to discover the subsurface features of
the moons.
Radio and Plasma Wave Investigation
(RPWI)
This will characterise radio emissions of
Jupiter’s magnetic field and the plasma*
environment on Jupiter and its moons.
*A plasma is a partly or wholly ionised gas whose particles
exhibit collective responses to magnetic and electric fields.
Gravity and Geophysics of Jupiter
and Galilean Moons (3GM)
This will study the gravitational field of
Ganymede, and the atmospheres and
ionospheres of Jupiter and its moons.
The total duration of JUICE’s mission.
In that time it will have been to Venus
and back to Earth (twice!), before
reaching Jupiter and its moons.
The impressive size of JUICE’s solar
panels. JUICE has to operate where
sunlight is 25 times weaker than on
Earth, so it needs to be able to collect
lots of light.
The temperature that JUICE will have to
operate in while in the orbit of Jupiter.
However, during its Venus yby, the
temperature will be +250°C!
The number of people who worked on
the JUICE mission. This ESA-led, global
collaboration included 18 institutions,
23 countries and 83 companies.
Everything you need to know about
ESA’s much-anticipated JUICE mission
Words Catherine Regan
Infographic James Round
What will JUICE’s
What tools does JUICE have on-board?JUICE: IN NUMBERS
What is JUICE?
Journey
to Jupiter
01
02
03
04
06 07
05
Welcome to Jupiter A Jovian joyride
JUICE will be focusing its aention on three
of Jupiter’s moons – Europa, Callisto and
Ganymede – but it’s estimated that the gas
giant has more than 90 moons, the most of any
planet in our Solar System!
JUICE is the latest in a long line of
ambitious missions involving Jupiter,
starting with the first yby by Pioneer 10
in 1973. In 1995, Galileo became the first
spacecra to orbit Jupiter, with the broad
aim of studying the planet and its moons.
And Juno followed two decades later to
further investigate the gas giant.
It’s believed that this moon could
potentially support life, so JUICE will
be looking for evidence of organic
molecules and other biosignatures
within the ice, and also within
water vapour that Europa may vent
into space.
Ganymede is the only moon in
the Solar System to generate its
own magnetic field. JUICE will
analyse this, along with the moon’s
atmosphere, complex core, its ice
content, and the potential of
a subsurface ocean.
With the oldest and most heavily
cratered surface in the Solar System,
JUICE will be investigating Callisto
to beer understand the features
and environment of the early Jovian
system. It will also study its structure,
composition and chemistry.
Number of ybys Number of ybys Number of ybys
Closest approach Closest approach Closest approach
During its eight-year journey,
JUICE will take in some of our
Solar System’s most spectacular
sights, as it uses the gravity of
other planets and moons to help
it reach its final destination.
JUICE will be launching
on an Ariane 5 rocket, the
‘workhorse’ of the ESA. Aer
110 successful launches, this
launch will be Ariane 5’s last,
as it is due to be replaced by
the new Ariane 6.
2 21 12
400km 200km 400km
10
85m
8
years
-230°C
>2,000
!
!
JUICE will then travel back to Earth,
where it will perform not one, but two
ybys in September 2026 and January
2029. These gravity assists allow the
cra to save a significant amount of
propellant on its journey.
JUICE will be launching
from French Guiana, which
is Europe’s spaceport,
within the launch window
in April 2023.
Aer launch, it will take
JUICE around 2.5 weeks to
complete the deployment
of its antennas, probes
and magnetometer boom.
In August 2024, JUICE will
perform a yby of the
Earth-Moon system, known
as a Lunar-Earth gravity
assist (LEGA) – the first
ever to be carried out.
In August 2025, JUICE will
perform a yby of Venus,
where it will receive
another gravity assist.
In January 2031, JUICE
will begin its science
phase, before reaching
Jupiter in July.
JUICE will perform 35 ybys
as it explores Jupiter's moons,
then will sele into orbit
around Ganymede in 2034.
journey look like?
!
Europa Callisto Ganymede
3GM – přístroj bude
studovat gravitační pole
Ganymedu, rozsah oceánů na
ledových měsících a strukturu
atmosféry i ionosféry
JUICE v číslech
Špičkové
vybavení
10
8 let
85 m²
−230 °C
>2000
7