The Big Dipper is a large asterism consisting of seven bright stars of the constellation Ursa Major. One of them, Megrez, is of third magnitude and the rest are of second magnitude. Four of the stars make a 'bowl' or 'body', while the remaining three define a 'handle' or 'head'. This asterism is known by different names in different parts of the world, like 'Big Dipper' in USA and Canada, 'Plough' in UK and Ireland and 'Saptarashi' in Indian astronomy. Stars of Big Dipper Dubhe Merak Phecda Megrez Alioth Mizar Alkaid Read More: Who was the youngest person to win the Nobel Peace Prize? What is the speed of light? Why does Earth see only one side of the moon?