In ancient Indian astronomy, the asterism of the Big Dipper (part of the constellation of Ursa Major) is called saptarishi, with the seven stars representing seven rishis, namely "Vashistha", "Marichi", "Pulastya", "Pulaha", "Atri", "Angiras" and "Kratu". There is another star slightly visible within it, known as "Arundhati". Arundhati and Vashishtha are married, and together form the Mizar double.