Ursa Minor, or Little Bear, the constellation of the northern sky that contains the Little Dipper. Ursa Minor is the most northerly of all constellations. Its brightest starPolaris, or the North Staris within approximately one degree of the north celestial pole. Because of this, Polaris never sets in latitudes north of the Equator, and is therefore visible in the Northern Hemisphere sky on any clear night. The second and third brightest stars, forming the end of the Little Dipper's bowl, are called the Guardians of the Pole.
The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. But what is it exactly, and what will happen when it burns itself out?
The changing phases of the moon have given us an enduring curiosity about the dark side of the moon. But is there really a dark side of the moon? What would we see there?