Hello,

The Ursa Major, Big Bear and Saptarishi are one and the same. The Big Bear and Saptarishi are the other names of the Ursa Major Constellation.

In Indian Mythology, the name Saptarishi is given to Ursa Major constellation because the constellation has seven prominent stars and the names of each star is derived from the names of seven rishis of India. The names of seven rishis were : Agastya, Atri, Bharadwaja, Gautam, Jamadagni, Vashistha and Vishvamitra.

Best Wishes.