The Great Square is an easily recognized asterism made up of three of the brightest stars of Pegasus and one star from Andromeda. The large square pattern lies close to the zenith on November evenings, and you can use almost every side and diagonal of the sprawling square to find other interesting celestial sights and constellations. If you imagine a straight line from Algenib to Alpheratz continuing on another 30º toward the northern horizon, you will come to the bright "W" of the constellation Cassiopeia (follow the yellow arrow on the chart above). Continuing a straight line from Scheat through Alpheratz another 50º-60º towards the eastern horizon will bring you to the wonderful Pleiades and Hyades star clusters in the constellation Taurus (follow the green arrow). A line from Markab through Algenib will quickly lead you to Jupiter, the first bright "star" in that direction (follow the orange arrow). An imaginary line from Scheat through Markab points to the bright star Fomalhaut in the constellation Piscis Austrinus close to the southern horizon (follow the purple arrow). Following the diagonal from Markab to Alpheratz will lead you to the bright star Capella and the pentagon shaped constellation Auriga just above the northeastern horizon. Following the same diagonal in the opposite direction, you can find the "smile" of Capricornus a short distance above the southwestern horizon.