And there they are! The three shadows of Io, Callisto and Europa on Jupiter's disc. pic.twitter.com/Cn8PqPuKXw
— Will Gater (@willgater) January 24, 2015
And there they are! The three shadows of Io, Callisto and Europa on Jupiter's disc. pic.twitter.com/Cn8PqPuKXw — Will Gater (@willgater) January 24, 2015
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