Looking for a sky event this week? Check out our full Sky This Week column.  November 30: Watch Titan reappear Jupiter is the object you’ll want to be watching this evening, as Ganymede prepares to transit along with its shadow. About an hour before that event starts, Ganymede and Europa line up as the two moons pass Continue reading "The Sky Today on Monday, December 1: Ganymede and its shadow transit Jupiter" The post The Sky Today on Monday, December 1: Ganymede and its shadow transit Jupiter appeared first on Astronomy Magazine .