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

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

“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...

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

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

Life as we know it needs liquid water. For liquid water to exist on a given planet, it has to lie in a specific region called ...

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

Baby stars, teenage planets, and disappearing icebergs are all featured this week. Plus, a look back at a New Horizons image ...

Jupiter and Saturn host strikingly different polar storms, despite being similar giant planets, and scientists have long wondered why. New simulations suggest the answer may lie deep below the clouds.

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

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