Researchers have recreated the tumultuous beginnings of Earth, simulating what the planet was like just after its formation 4 ...

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond ...

Astronomers in Japan have published their theory of an "Earth-like planet," dubbed Planet Nine, that's hiding in plain sight just a few billion miles behind Neptune.

One of the smallest, coolest stars found to have planets of any kind—just 86 light-years from the solar system—appears to have an Earth-like volcanic world. The planet, called LP 791-18 d, is ...

When most of us think about theweather on other planets, we imagine extreme conditions—boiling acid rain, methane snow, or violent winds sweeping across barren landscapes. Yet, recent space ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Potentially habitable super-Earth discovered An international team of scientists announced on Wednesday that they have discovered two new "super-Earth" planets just 100 light-years away.

Earth is the only planet known to support life. Learn about what Earth is made of and where it came from.

A space rock spotted recently with NASA-funded ground telescopes is about to do just that, temporarily becoming an additional lunar-like companion to planet Earth.

We have gaseous planets like Jupiter and rocky planets like Earth. We know there is a new kind of planet between what is rocky and gaseous: This new exoplanet is one of them.

How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

In an exciting breakthrough for astronomy and the search for extraterrestrial life, a team of international scientists has announced the discovery of Gliese 12 b, a temperate, Earth-sized ...