34 OUR PHYSICAL WORLD 



Diana to try her skill with her arrow and see if she could hit the 

 tiny thing. This she did, and when she found out that she had 

 killed Orion she was so much grieved that she gave him immortal- 

 ity among the stars and made him outshine all his rivals. 



To the east of Orion (below in the winter evenings) is the 

 most brilliant star in the sky, Sirius, in the constellation of 



FIG. 19. Gemini, the Twins 



the Great Dog, Canis Major. Sirius, Betelgeuse, and Procyon, a 

 first-magnitude star in the Lesser Dog, form an isosceles triangle, 

 Procyon forming the northern apex. The Great and Lesser 

 Dogs are following the Hunter, Orion. 



Another larger triangle with Sirius and Aldebaran at the basal 

 corners has a bright star, Pollux, one of a pair, at its northern 



