Pegasus' Great Square: A Stellar Sight in the Night Sky

The Great Square of Pegasus, an asterism in the Pegasus constellation, will be visible in the eastern sky throughout September. Comprised of four stars, the Great Square rises higher each night and can be used to locate the nearby star 51 Pegasi, which is home to the first exoplanet ever discovered orbiting a main sequence star. The Great Square is not an official constellation but is a recognizable pattern in the night sky. It will reach its best viewing position in October.