Mars

A 90-mile-wide scar on the Martian landscape is potential "ground zero."

Don't get too excited just yet.

The solar system is more than a row of nine circles. Try 18,000 of them.

The wispy, blue ice clouds of Mars are actually made of pulverized meteors, a new study claims.

It looks like Starfleet is literally embedded on the planet next door.

This is one of the most tangible pieces of evidence yet for the idea that explosive volcanism was more common on early Mars.

NASA's still on track to send humans to the moon. But confusion doesn't help.

Noodle-looking rocks could be humanity's first hint that life once existed on far-flung planets.

If humans mine one-eighth of the solar system's extraterrestrial resources, we could be doomed.

Why is Mars so dry? A new paper might have the explanation.

The Flames of Chimaera are fueled by an underground methane seep, but not the garden-variety kind.

A team of undergraduate students at Drake University in Iowa is developing a magnetic shield to defend interplanetary astronauts from the intense cosmic radiation between Earth and Mars.

How a year in space affected Scott Kelly's health.

Curiosity rover captured Martian moons Phobos and Deimos crossing the sun.

Mars was very wet until suddenly it wasn't. And scientists still aren't sure why.

Bowie was right; there really is a "spider" from Mars.

There's a glorious panorama and a few sad thumbnails of a dark and dusty sky.

Sometime in the last decade, something heavy slammed into the Martian atmosphere and blasted apart into a hard rain of superheated material.

NASA has another mobile robot on Mars. Why not launch a rescue mission?