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The Sky This Week

This Week’s Sky at a Glance, July 21– 29

Friday, July 21 • We're only a third of the way through summer, but already W-shaped Cassiopeia, a constellation better known for decorating fall and winter evenings, is climbing up in the north-northeast as evening grows late. And the Great Square of Pegasus, icon of fall, comes up to balance on one corner just over the east horizon. Saturd..