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

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

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

For many years, astronomers have been looking for extraterrestrial life. In doing so, astronomers have narrowed their search ...

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

NASA has revealed a terrifying glimpse into our solar system 's grizzly fate. In five billion years, scientists believe the ...

"I don't think anyone's made this connection between the surface fluid pattern and the interior properties of these planets." ...

Thick, swirling clouds cover Jupiter from pole to pole. They hold water like Earth’s clouds, but at far greater density.

For decades, the number of planets seemed settled and unquestioned. Then definitions changed, discoveries multiplied, and certainty disappeared. The issue was never distance or size alone, but ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

For years, astronomers have celebrated every hint of an ocean on a distant world as a potential foothold for life. Now a new wave of modeling argues that most of those supposed seas are illusions, and ...