Thursday, 5 January 2012
Jupiter's Moons Perform Shadowy Waltz Next Week: How to Watch | Io, Europa, Ganymede & Callisto | Skywatching & Telescopes | Space.com
Jupiter's Moons Perform Shadowy Waltz Next Week: How to Watch | Io, Europa, Ganymede & Callisto | Skywatching & Telescopes | Space.com: Usually, when telescope owners observe Jupiter's four bright moons, they are strung in a line on either side of the planet, but occasionally skywatchers can catch a so-called transit, when one of the moons slowly crosses the face of Jupiter.
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