Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

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

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

If everything in our solar system formed from the same solar nebula ... These rocky bits eventually coalesced to form the terrestrial planets. However, at a distance of around 4 astronomical units ...

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

Earliest inner solar system planetesimals shaped the inventory of moderately volatile elements in terrestrial planets.

The organic ingredients to life, hints to where Earth’s water came from, and the fundamental building blocks of our planet ...

Helium can help scientists detect the speed and direction at which we’re moving through space. Deuterium, which is left over ...

Although the chances of impact are slim, Bennu is still one of the most potentially hazardous known asteroids in our solar ...

A new climate modeling study presents a new scenario of how climate and life on our planet would change in response to a potential future strike of a medium-sized (~500 m) asteroid.

Material retrieved from the asteroid Bennu by NASA’s OSIRIS-REx spacecraft shows that all the basic building blocks of life ...

To better understand why the planets have variable compositions ... to the formation of the gas and ice giants in the outer solar system. This first-order model of planetary growth in the solar ...