Looking for a sky event this week? Check out our full Sky This Week column.  February 25: Ganymede tracks across Jupiter As February 25th opens, Ganymede is moving away from Jupiter’s southwestern limb and its shadow is preparing to transit. The large shadow makes its way onto the cloud tops near the southeastern limb around midnight CST, Continue reading "The Sky Today on Thursday, February 26: Mercury moves north of Venus" The post The Sky Today on Thursday, February 26: Mercury moves north of Venus appeared first on Astronomy Magazine .