The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

The dichotomy arises during the first 50 million years of planetary history. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Supercomputer ...

Mars could have lost its liquid water, the key ingredient of life, because it is small, according to a study. Washington University researchers say that the Red Planet's size may be the key reason it ...

Astronomers have recently tracked a massive rogue planet, referred to as a “super-Jupiter,” that is drifting toward our solar neighborhood. This discovery has captured the attention of the scientific ...

This illustration provided by NASA in 2017 depicts the planet 55 Cancri e, right, orbiting its star. A thick atmosphere has been detected around the planet thats twice as big as Earth in a solar ...

Artist's rendition of Mars with Earth-like surface water. We have a fleet of robots seeking out habitability on Mars, but is the planet too small for life in the first place? A new study suggests that ...

DALLASDALLAS — A thick atmosphere has been detected around a planet that’s twice as big as Earth in a nearby solar system, researchers reported Wednesday. The so-called super Earth — known as 55 ...