The brightest star in the sky, as viewed from Earth, is Sirius. Sirius is located in the constellation Canis Major and is often referred to as the "Dog Star." It is easily visible in the night sky, especially during the winter months in the northern hemisphere. Sirius is a binary star system, with Sirius A being the brighter and more prominent component. It is approximately 8.6 light-years away from Earth and shines with a white-blue color. Due to its brightness, Sirius has been a notable star in various cultures and has a significant place in mythology and folklore.