NASA’s Hubble Space Telescope captured the rare occurrence of three of Jupiter’s largest moons racing across the banded face of the gas-giant planet: Europa, Callisto, and Io on Jan. 24, 2015.
NASA’s Hubble Space Telescope captured the rare occurrence of three of Jupiter’s largest moons racing across the banded face of the gas-giant planet: Europa, Callisto, and Io on Jan. 24, 2015.