The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Certain extreme planets are called ultra-short period objects if they're very close to their stars and orbit them in mere hours, like K2-22b.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

In a groundbreaking revelation, NASA’s OSIRIS-REx mission has uncovered organic compounds and complex carbon molecules in samples collected from asteroid Bennu, marking a major milestone in the search ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Known as the "Parade of Planets," the celestial event will feature appearances from Mars, Jupiter, Uranus, Venus, Neptune and ...

New insights from NASA's OSIRIS-REx mission have unveiled intriguing clues about the potential origins of life on Earth. The mission, which launched in Septembe ...

Scientists from NASA and other institutions who have been analyzing the Bennu asteroid sample that returned to Earth last ...

In samples NASA brought back from the asteroid Bennu, scientists have discovered of organic compounds, including key building ...

Scientists have finally had a close look at the rubble collected by a NASA spacecraft from an asteroid. In it, they've found ...

NASA scientists found amino acids, key minerals, and nucleobases for DNA in samples from the OSIRIS-REx asteroid mission.

All forms of Earth life have specific chemicals in their makeup, such as amino acids and sugars. Scientists have known that ...