Why Is Europa Red? Spectrographic evidence suggests that the dark, reddish streaks and features on Europa’s surface may be rich in salts such as magnesium sulfate, deposited by evaporating water that emerged from within. Why does Europa have red? The startling colour is due to contaminating minerals rising from beneath the icy crust, possibly salts
Which Galilean Moon Has The Smoothest Surface? The name comes from a mythical Phoenician noblewoman, Europa, who was courted by Zeus and became the queen of Crete, though the name did not become widely used until the mid-20th century. It has a smooth and bright surface, with a layer of water surrounding the mantle of
How Long Is A Day In Ganymede? Like most known moons, Ganymede is tidally locked, with one side always facing toward the planet, hence its day is seven days and three hours. How long is a year on Ganymede? Ganymede’s day is just over 7 Earth days long, the same time it takes to orbit