Bright white rocks spotted by NASA’s Perseverance rover are rewriting what we thought we knew about ancient Mars. These ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

Over the years, passing spacecraft have observed mystifying weather patterns at the poles of Jupiter and Saturn. The two ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the extent to which Mars is quietly tugging on Earth's orbit and shaping the ...

In addition to shaping the interior of rocky planets, molten rock located deep within these planets may also contribute to ...

Astronomers have confirmed a Saturn-size world drifting alone in deep space roughly 10,000 light-years from Earth, a discovery that turns a once-theoretical idea into a measured reality. The planet ...

Astronomers Discover a Rogue Planet the Size of Saturn Drifting Through Our Galaxy ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

This doesn’t mean Mars causes ice ages on its own. Orbital cycles are only part of the picture. Earth’s oceans, atmosphere, ...