Sirius may be the 'big dog' in the constellation Canis Major but Wezen can throw its 'weight' around, too, as we learn on this week's Looking Up. Today I want to tell you about a very interesting star in the Colorado night sky right now, but be sure to lift with your knees when you look at the star Wezen. The name means, well, literally weight. Wezen is the third brightest star in the constellation of Canis Major, the big dog.