Looking for a sky event this week? Check out our full Sky This Week column. March 8: Spiral galaxy NGC 2541 The Galilean moon Callisto disappears behind Jupiter in an occultation early this morning.

Looking for a sky event this week? Check out our full Sky This Week column. March 9: Callisto's disappearing act The Moon passes 0.7° south of the star Antares in the constellation Scorpius at 8 A.M.

Sky This Week is brought to you in part by Celestron. Friday, March 6With no Moon in the early-evening sky, let's chase down ...

Add Yahoo as a preferred source to see more of our stories on Google. On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he looked at ...

Jupiter’s icy moons may have been seeded with the chemical ingredients for life from the very beginning. An international ...