orion
The star constellation Orion, The Hunter. Orion is one of the most beautiful of all constellations, and one of the easiest to find. It looks like a large slightly twisted rectangle high in winter's south-southeastern sky. Two of the brightest stars in the evening sky lie at opposite corners of the rectangle: bright orange-red Betelgeuse at the northeastern corner upper left in the photo and even brighter Rigel at the southwest lower right in the photo . Betelgeuse is at least 300 times the Sun's diameter, and perhaps much more. It puts out about 100,000 times more energy than the Sun does. When Betelgeuse dies, it will create a fireball that will briefly outshine billions of normal stars. Betelgeuse is a red giant and Rigel is a blue giant.