Asteroids hitting Earth may have caused "Snowball Earth" periods where ice covered the planet's surface for thousands or millions of years.

Researchers consider the feasibility of a knocked-off piece of the moon getting into Earth's quasi-satellite orbit—an unlikely phenomenon.

The first views of 4.5-billion-year-old asteroid Bennu samples collected in space and recently brought reveal water and high-carbon content.

After traveling billions of miles, the NASA OSIRIS-REx mission has landed a capsule with rocks and dust from the asteroid Bennu in the Utah desert.

A large population of asteroids hurtling through the solar system may not be as dry as previously thought, salt grains on an asteroid show.

Planetary scientists have identified a potential source of shock-darkened meteorites, which have dark veins.

A more accurate simulation of the impact that made the Vredefort crater, Earth's largest, two billion years ago, shows the asteroid was bigger than believed.

A crater from an asteroid scientists think hit Earth around the same time as the one that killed the dinosaurs brings up the question, "Are there others?"

A Japanese spacecraft grabbed a handful of dust from the asteroid Ryugu. Scientists have now analyzed a sample.

A reconstruction of the early history of several asteroids indicates that the solar system at its beginnings was much more chaotic than we thought.