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\n\t\t\t\tLook for the Great Square of Pegasus in the east late this evening, bounded by four stars \u2014 including one in a neighboring constellation\t\t\t<\/p>\n
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\n\t\t\t\t\t\tRising in the east around 10:30 P.M. is the Great Square of Pegasus, marked by four bright stars. Credit: Stellarium\t\t\t\t\t<\/p>\n
Looking for a sky event this week? Check out our full\u00a0Sky This Week<\/a>\u00a0column.\u00a0<\/p>\n July 24: The Moon passes Antares<\/a><\/p>\n Rising in the east around 10:30 P.M. local daylight time is the Great Square of Pegasus, made up of four stars: Algenib, Markab, Scheat, and Alpheratz. But of these four, only the first three on the list are technically in the constellation Pegasus, cataloged as Gamma (\u03b3), Alpha (\u03b1), and Beta (\u03b2) Pegasi. Alpheratz is cataloged as Alpha Andromedae, part of Andromeda the Princess.\u00a0<\/p>\n Despite its location on modern charts, the late stellar expert Jim Kaler<\/a> suggests Alpheratz was once part of Pegasus proper, as its ancient name can be translated to \u201cthe horse\u2019s shoulder.\u201d The constellations have undergone many changes throughout the millennia, and it is only in recent decades that we have come to use an established, universally accepted system of 88 constellations and their boundaries, created in 1928 by the International Astronomical Union.\u00a0<\/p>\n