When you think about stars twinkling overhead, you probably don’t associate them with a color. But the star Sirius shifts through every color of the rainbow. That effect is thanks to the same ...

Sirius, also called the Dog Star, is the brightest star in Earth's night sky. Shining more brilliantly than any other star visible from Earth (excluding our sun, of course), Sirius is outshone only by ...

You thought the brightest star is Polaris, right? Or one of the stars in Orion? Nope! Sirius—the “Dog Star”—never seems to get the recognition it deserves. It’s the brightest star in the night sky by ...