Hubble Views Three Moons Transiting the Face of Jupiter

Taken with Hubble’s Wide Field Camera 3 in visible light, these new images capture the rare occurrence of three of Jupiter’s largest moons (Europa, Callisto, and Io) racing across the banded face of the gas-giant planet. These so-called Galilean moons, named after the 17th century scientist Galileo Galilei, who discovered them with a telescope, complete […]
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