Earth" planet was discovered by researchers. It is not believed these planets are more common than previously thought.

Scientists have discovered an exoplanet 140 light-years away that's rapidly disintegrating as it orbits its star every 30 ...

A new study released on Thursday describes a search for what are called "microlensing" events, where a planet acts as a ...

Astronomers claim they've found the most promising signs of possible life on a planet outside of our solar system.

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

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

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

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% ...

Once the quirky underdog of our solar system, Pluto held planetary status until 2006 ... Pluto checks the first two boxes, it orbits the sun and is round, but it fails the third.

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.