NASA is tracking a mysterious, fast-moving object entering our solar system, raising questions about whether it's just a ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

The near-Earth asteroid Bennu contains stardust that is older than the solar system and clues about its violent history, ...

The new image, which shows Earth along with an even smaller point of light coming from the moon, harkens back to Carl Sagan's ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth's orbit came from.

Mundane wayward space rock, or extraterrestrial visitor? Astronomers believe that our solar system's latest and only third ...

Aliens may have been closer to Earth than first thought. New research from NASA reveals that Ceres, the dwarf planet in the ...

NASA’s OSIRIS-REx samples from asteroid Bennu reveal stardust, water-driven chemistry, and clues to life’s origins in the ...

NASA’s Perseverance rover captures striking new details of the planet, including rock samples that could return to Earth in future missions.

Tidal forces from Earth, Venus and Jupiter may help keep the sun calm, reducing the risk of powerful solar storms that ...

The appeal is straightforward. Solar panels on Earth depend on weather. They shut down at night, sulk under clouds, and fade ...

Some of the most basic building blocks of the solar system are missing from one of its most dangerous asteroids.