Wow! Hubble telescope sees rare 3-Moon shadow dance on Jupiter

February 6, 2015 2:36 PM

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Wow! Hubble telescope sees rare 3-Moon shadow dance on Jupiter

Three moons and their shadows move across Jupiter during a rare triple transit on Jan. 24, 2015. Europa is at lower left, Callisto is above and to the right of Europa and Io is approaching Jupiter's eastern limb. Europa's shadow is toward the l (NASA, ESA, and the Hubble Heritage Team (STScI/AURA))

NASA's Hubble Space Telescope captured the rare sight of three of Jupiter's largest moons, Europa, Callisto, and Io, crossing the face of the gas-giant planet on Jan. 24, 2015. (NASA, ESA, and the Hubble Heritage Team (STScI/AURA))

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