An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

By Will Dunham WASHINGTON (Reuters) -Astronomers have spotted a small rocky planet that orbits perilously close to its host ...

Discover interesting facts about Saturn, its rings and whether it could contain extraterrestrial life.

Astronomers have found thousands of exoplanets — worlds beyond our solar system. Most of them are in single-star systems, ...

NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Located about 120 light years away, the exoplanet appears to take ...

About 5,800 planets beyond our solar system, called exoplanets, have been discovered since the 1990s. Of those, only four ...

is the second closest planet to the Sun and orbits 67 million miles away from the sun. But it's the hottest planet in the solar system. But why? It has to do with Venus' atmosphere, made up of 96% ...

Brown dwarfs are sometimes called failed stars because they’re lighter than stars, but heavier than gas giant planets. A light year is nearly 6 trillion miles. The brown dwarf pair was first ...