Grus is a constellation located in the southern sky. Its name is Latin for "crane," and it was introduced in the 16th century by the Dutch astronomer Petrus Plancius. The constellation is home to several notable stars, including Alnair, which is the brightest star in Grus. Grus contains a variety of deep-sky objects, such as the Grus Quartet, a group of four interacting galaxies. This constellation is best visible in the months of September to November, making it a popular target for amateur astronomers. Its distinctive shape resembles a crane in flight.