Astronomy & Space

ESA JUICE probe targets dark Jovian moon Kallichore in 2031

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The ESA JUICE probe is scheduled to target Kallichore, a small and dark Jovian moon, in 2031. While Jupiter's four Galilean moons (Io, Europa, Ganymede, and Callisto) receive most scientific attention due to their active geology, including Io's extreme volcanic activity and Europa's subsurface ocean, the planet hosts over 100 moons. Jupiter's smaller, lesser-known moons like Kallichore may offer valuable insights into solar system history because they have remained relatively unchanged over time, unlike their larger Galilean counterparts.


Studying pristine, ancient moons like Kallichore could reveal crucial information about the early solar system's formation and evolution that has been erased or modified on more geologically active bodies. This mission expands our understanding beyond the well-studied Galilean moons to include Jupiter's diverse system of smaller satellites.


Jupiter hosts more than 100 moons, with most attention focused on the four Galilean moons: Io, Europa, Ganymede and Callisto. This is primarily due to their active geology, including Io being the most volcanically active planetary body in the solar system and Europa having a vast subsurface liquid-water ocean beneath its icy crust. However, Jupiter’s smaller, lesser-known moons could provide astronomers with key insights into the history of the solar system because they have remained largely unchanged, unlike the Galilean moons.

Source: ESA JUICE probe targets dark Jovian moon Kallichore in 2031