The solar system is a collection of celestial bodies held together by the sun's gravitational pull. Our solar system is located in the Milky Way galaxy. The solar system consists of eight planets, ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Sci-fi movies and TV shows love to place a planet inside a binary system. In reality, a planet shouldn’t be able go around ...

WASHINGTON -- Astronomers have found the coldest spot in our solar system and it may be a little close for comfort. It's on our moon, right nearby. NASA's new Lunar Reconnaissance Orbiter is making ...

"Abnormal, chaotic and strange" are just a few adjectives astronomers are using to describe a perplexing planetary system 60 light-years from Earth. And for one of the two exoplanets orbiting the ...

The discovery of ancient water in a planet-forming disk reveals that some of the water found in comets—and maybe even ...