Deflecting asteroids by running spaceships into them may sound like science fiction, but it's quite real. And it's quite a ...

A new study of dinosaur biodiversity challenges the belief that the megafauna were on their way out 66 million years ago ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

Around 66 million years ago, the reign of the dinosaurs came to a fiery end. An asteroid about 7 miles (12 kilometers) wide, ...

A paper from several NASA scientists and other researchers explores whether an asteroid with a 4% chance of hitting the moon ...

The first flight mission for planetary defense, NASA's Double Asteroid Redirection Test (DART) seeks to validate a method to ...

The universe has quasi-moons, mini-moon, and moonlets, but no official definition of what counts as a moon.

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

A massive crater hidden beneath the Atlantic seafloor has been confirmed as the result of an asteroid strike from 66 million ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, ...

Astronomers have identified 2025 SC79, a new asteroid with a remarkably fast 128-day orbit, placing it among the ...