SpaceMystery cold spot on Jupiter's moon Europa could be 'almost anything' The first full temperature map of Jupiter’s icy moon Europa has revealed one spot that seems colder than anywhere else on the surface - but we have no clue why News
SpaceYoung Saturn gave Jupiter the building blocks for its big moons After Jupiter formed, it likely had no nearby material to build moons. Young Saturn may have tossed rocks at the gas giant that grew into its four biggest moons News