Stargazers will be treated to a dazzling six-planet "alignment" this January.

Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

Actually called Polaris, it's one of the best-known stars in the night sky, but few people can find it despite it being visible to everyone in the northern hemisphere at all times. Polaris is a ...

It can be identified by locating the two brightest stars in the Northern Hemisphere — Arcturus and Vega — and tracking a straight line from one to the other, which will lead skywatchers to ...

That's largely because they occur for Northern Hemisphere observers during a time of cold and often cloudy weather. However, if the skies are clear, about 25 shooting stars — some of them ...

The colorful northern lights may reveal themselves to a wide swath of Americans Friday night due to an impending solar storm ...