The surface of Venus is dry and rocky with lava ... Jupiter is so huge that it is twice as massive as all the other planets in the Solar System put together. Jupiter's stripy appearance is caused ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies ...

We know more about the surfaces of other planets than we do about what's inside our own. No drill has ever penetrated Earth's crust, which averages 25 miles thick beneath the continents. So, virtually ...

They're the only two other very Earth-like planets in our solar system, meaning they orbit close to the sun, they have rocky surfaces and thin atmospheres. Due to these similarities, the study of ...

Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of monikers. Every other solar system ...

Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant planets, suggests a new study.