Looking for a sky event this week? Check out our full Sky This Week column.  February 21: A ghostly planetary nebula A lovely crescent Moon is visible nearly all evening, setting around local midnight. If you’ve got a telescope, tonight is a great opportunity to view a famous trio of craters just south of the lunar equator Continue reading "The Sky Today on Sunday, February 22: Track three craters on the Moon" The post The Sky Today on Sunday, February 22: Track three craters on the Moon appeared first on Astronomy Magazine .