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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Jupiter Icy Moons Explorer | 4/4 | https://en.wikipedia.org/wiki/Jupiter_Icy_Moons_Explorer | reference | science, encyclopedia | 2026-05-05T13:18:32.966259+00:00 | kb-cron |
=== Moons and Jupiter Imaging Spectrometer (MAJIS) === A visible and infrared imaging spectrograph operating from 0.5 μm to 5.56 μm, with spectral resolution of 3–7 nm, that will observe tropospheric cloud features and minor gas species on Jupiter and will investigate the composition of ices and minerals on the surfaces of the icy moons. The spatial resolution will be down to 75 m (246 ft) on Ganymede and about 100 km (62 mi) on Jupiter.
=== UV Imaging Spectrograph (UVS) === An imaging spectrograph operating in the wavelength range 55–210 nm with spectral resolution of <0.6 nm that will characterise exospheres and aurorae of the icy moons, including plume searches on Europa, and study the Jovian upper atmosphere and aurorae. Resolution up to 500 m (1,600 ft) observing Ganymede and up to 250 km (160 mi) observing Jupiter.
=== Sub-millimeter Wave Instrument (SWI) === A spectrometer using a 30 cm (12 in) antenna and working in 1080–1275 GHz and 530–601 GHz with spectral resolving power of ~107 that will study Jupiter's stratosphere and troposphere, and the exospheres and surfaces of the icy moons.
=== Ganymede Laser Altimeter (GALA) === A laser altimeter with a 20 m (66 ft) spot size and 10 cm (3.9 in) vertical resolution at 200 km (120 mi) intended for studying topography of icy moons and tidal deformations of Ganymede.
=== Radar for Icy Moons Exploration (RIME) === An ice-penetrating radar working at frequency of 9 MHz (1 and 3 MHz bandwidth) emitted by a 16 m (52 ft) antenna; will be used to study the subsurface structure of Jovian moons down to 9 km (5.6 mi) depth with vertical resolution up to 30 m (98 ft) in ice.
=== Juice-Magnetometer (J-MAG) === Juice will study the subsurface oceans of the icy moons and the interaction of Jovian magnetic field with the magnetic field of Ganymede using a sensitive magnetometer.
=== Particle Environment Package (PEP) === A suite of six sensors to study the magnetosphere of Jupiter and its interactions with the Jovian moons. PEP will measure positive and negative ions, electrons, exospheric neutral gas, thermal plasma and energetic neutral atoms present in all domains of the Jupiter system from 1 meV to 1 MeV energy.
=== Radio and Plasma Wave Investigation (RPWI) === RPWI will characterise the plasma environment and radio emissions around the spacecraft, it is composed of four experiments: GANDALF, MIME, FRODO, and JENRAGE. RPWI will use four Langmuir probes, each one mounted at the end of its own dedicated boom and sensitive up to 1.6 MHz, to characterize plasma, and receivers in the frequency range 80 kHz to 45 MHz to measure radio emissions. This scientific instrument is somewhat notable for using Sonic the Hedgehog as part of its logo.
=== Gravity and Geophysics of Jupiter and Galilean Moons (3GM) === 3GM is a radio science package comprising a Ka transponder and an ultrastable oscillator. 3GM will be used to study the gravity field at Ganymede (up to 10 degrees), to determine the extent of internal oceans on the icy moons, and to investigate the structure of the neutral atmospheres and ionospheres of Jupiter (0.1 – 800 mbar) and its moons. 3GM carries an Israeli-built atomic clock "that will measure tiny vacillations in a radio beam".
=== Planetary Radio Interferometer and Doppler Experiment (PRIDE) === The experiment will generate specific signals transmitted by Juice's antenna and received by very-long-baseline interferometry to perform precision measurements of the gravity fields of Jupiter and its icy moons.
== See also == Exploration of Jupiter Galileo – former Jupiter orbiter Juno – current Jupiter orbiter Europa Clipper – NASA space mission to Jupiter and Europa Tianwen-4 – planned Jupiter/Callisto orbiter Jupiter flybys: Pioneer 10 & 11; Voyager 1 & 2; Ulysses; Cassini–Huygens; New Horizons 17776, a speculative fiction work featuring a sentient Juice List of European Space Agency programmes and missions
== References ==
== External links ==
ESA's Juice page Future Planetary Exploration Juice – Jupiter Ganymede Orbiter Revised Proposal Jupiter Icy Moons Explorer (2011) (OPAG October 2011 Presentations) Juice (JUpiter ICy moons Explorer) (OPAG March 2012 Presentations) Juice-JAPAN – JAXA Juice – NASA Juice article on eoPortal by ESA YouTube channel the making of Juice – ESA The making of Juice: the film by ESA