Asteroids

The asteroid that exploded over Luzon was not a threat—but it was a victory for our planetary defense systems.

Taking holiday a moment to appreciate how Earth got its water—and eggnog and mulled wine.

From Mary Roach’s hilarious look at space travel to astronaut Scott Kelly’s photos documenting a year off planet.

Here's what you need to know about witnessing the annual August event, when Earth passes through a comet's castoffs.

Explore a catastrophic space rock strike, unique flora and fauna, and millennia-old rock art on this famous stretch of desert road.

For this community of “space cowboys,” entrepreneurs, and enthusiasts, a fireball streaming across the sky offers big risks and bigger rewards—and new tech is heating up the competition.

Fish fossils may put "the single worst day for multicellular life on Earth" on the calendar.

A massive space rock impact event may have inspired the tale of godly wrath.

The spacecraft OSIRIS-REx gives us a startlingly clear view of space rock that probably won't hit us.

A peanut? Or maybe a bowling pin?

The dwarf planet Ceres is studded with cryovolcanoes.

The key to solving the puzzle was meteor showers.

It's kind of a comet and kind of an asteroid that orbits itself, and it could tell us something about early Earth.

Over time, they drift apart.

When 2008-TC3 crashed into the Sudanese desert, not everyone was surprised.