Ursa Major

Ursa Major (Latin: "Larger Bear"; also known as the Great Bear and Charles' Wain) is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April. It is dominated by the widely recognized asterism known as the Big Dipper or the Plough, which is a useful pointer towards the north, and it has mythological significance in numerous world cultures.

http://en.wikipedia.org/wiki/Ursa_Major