Polaris and Sirius are two stars that have been known since ancient times. Polaris, also known as the North STAR, is located in the constellation Ursa Minor and is the brightest STAR in the night sky. Sirius, also known as the Dog STAR, is located in the constellation Canis Major and is the brightest STAR in the night sky after Polaris. Both stars have been used for navigation and have been featured in many myths and legends throughout history.