Mars

Simulated "Martian gardens" are helping NASA scientists learn which plants astronauts will be able to grow in future missions to the Red Planet.

NASA's Mars rover Curiosity has taken a gorgeous selfie that shows the rugged, mountainous landscape the six-wheeled robot will be exploring during its newly begun extended mission.

Have you read that the moon will turn green on April 20 or May 29? Don't believe it.

Look up this weekend to catch bright Mars as it begins a zigzag detour across the spring sky.

Humans may need to genetically engineer themselves to withstand the harsh and unpredictable environments encountered during long-term space travel, one researcher says.

This eerie portrait of Mars' moon Phobos in ultraviolet light was snapped by the NASA orbiter MAVEN as their orbits crossed paths.

The car-size Curiosity rover was hard at work investigating Namib Dune — part of a larger complex of shifting dark Martian sand called Bagnold Dunes — when it captured the photo on Jan. 19.

Mars may one day have rings like Saturn's, if the Red Planet manages to completely crush its innermost moon, Phobos.

A sudden spurt of liquid water on Mars could potentially create deep lakes today, new research suggests.