With its beautiful rings, Saturn may be the most stunning planet in the solar system. It is the sixth planet from the sun and ...

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

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

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is hidden in our solar system.

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of a planet about twice the size of Earth orbiting its star ...

Mars is about 140 million miles from our cozy planet. A human mission to that cold, rocky neighbor would mean being away from Earth for about 3 years. But the things those explorers would see and ...

Jupiter is our solar system's largest planet. The two brown dwarfs are gravitationally bound and orbit near to each other - as close as just 4% of the distance between Earth and the sun.

Jupiter is our solar system's largest planet. The two brown dwarfs are gravitationally bound and orbit near to each other - as close as just 4% of the distance between Earth and the sun.