JUICE (JUpiter ICy moons Explorer) is an esa mission launched April 2023 to study Jupiter’s icy moons — Ganymede, Callisto, and europa. It is scheduled to arrive at the Jupiter system in 2031, one year after europa-clipper.
Relevance
Together with Europa Clipper, JUICE will follow up on juno’s 2022 ice-shell thickness measurement (~29 km conductive layer) to further characterize Europa’s subsurface ocean and assess ocean-worlds habitability.
JUICE also carries an SwRI-led Ultraviolet Spectrograph (UVS); in November 2025 it imaged the day side (glowing gas) of interstellar comet 3i-atlas in coordination with Europa Clipper, a use beyond its primary Jupiter mission (src-3i-atlas-dual-spacecraft-imaging-2026-05).