JWST Finds Callisto Active

BaltimoreCallisto draws the least attention of Jupiter’s moons.

New data reopens the question of what counts as geologically active.

Unlike Io’s volcanoes, Europa’s ocean or Ganymede’s magnetic field, Callisto’s cratered surface looked frozen in time.

ESA’s JUICE probe, which flies past Callisto, may need a revised list of targets.

Sources: Phys.org