Dark streaks on Mars may not be caused by flowing water
New evidence points to shifting sand and dust, not liquid.
Swiftly-falling snowstorms may fall at night on Mars
The nocturnal atmospheric conditions are unstable, leading to quickly-descending icy particles.
See how NASA envisions a 'Mars 2030' landing in VR
It will cost you $15 to explore 15 miles of virtual Martian landscape.
From Mars to Earth and the Moon, 127 million miles away
A new photo from the Mars Reconnaissance Orbiter should make just about everybody feel like an insignificant speck of dust.
Mars hides a gigantic ice sheet that may help astronauts
Explorers won't have to visit polar regions to find water.
NASA publishes a thousand photos of Mars
They were taken by the Mars Reconnaissance Orbiter's HiRise camera.
NASA aims to predict dust storms on Mars
New temperature studies have revealed storm patterns on the Red Planet.
Mars faced an ice age 400,000 years ago, and it's still recovering
Researchers confirm that Mars has seen many ice age cycles over time, and is still coming out of the last one.
NASA's solar-powered Juno mission heads to Jupiter today, Orbiter finds water on Mars? (video)
NASA's Juno mission has been beset by delays for a while now, but the solar-powered excursion is fi...