If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...

Earth's forests play a critical role in keeping our planet habitable. Often called the "lungs of the Earth," forests cover ...

Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

An artist's impression of K2-18b and its distant host star, visualized as if the planet had water and a hydrogen-rich ...

Championing sustainability by promoting nature nonprofits, increasing recyclability and reducing waste and emissions.

Astronomers are nearing a statistically significant finding that could confirm the potential signs of life detected on the ...

A rare and dramatic scene unfolds 140 light-years from Earth. A rocky planet, once whole, is now crumbling to dust under the ...

Scientists have discovered a planet that is literally falling apart as it orbits its star. Located about 140 light-years from ...