Northern lights, or auroras, are not exclusive to Earth. Astronomers have already detected this phenomenon on most planets and many moons in our solar system. Now, an international research team has ...

This illustration provided by Caltech depicts the orbits of brown dwarf twins, Gliese 229Ba and Gliese 229Bb, with a separation only 16 times larger than the distance between Earth and the Moon. The ...

WASHINGTON (Reuters) - In 1995, astronomers confirmed the discovery for the first time of a brown dwarf, a body too small to be a star and too big to be a planet - sort of a celestial tweener. But it ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW YORK (AP) — A celestial object ...