There are few more potent reminders that Mars used to be a wet world than seeing ancient, dried up river beds etched into the red planet's surface.
In a decidedly wintry-looking scene, frost-filled fractures fills a crater near the north pole of Mars -- as observed by NASA's Mars Reconnaissance Orbiter.
What's that? Not one, but a SWARM of dust devils on Mars!
Could the seismic fingerprint of dust devils detected on Earth be used to decipher the tiny tornadoes racing across the Martian surface?
By combining high-resolution observations of Mars dune ripples and comparing them with sand dunes on Earth, scientists are beginning to understand how surface winds influence the Red Planet.
Check out where 'The Martian's' Mark Watney was moving around in the fictional tale, using real photographs of Mars.
Once again the world is abuzz about water on Mars -- what's the fuss about this time?
NASA's Mars Reconnaissance Orbiter (MRO) has spotted its roving buddy Curiosity on the Martian landscape, but the rover seems to be missing its tell-tale tracks in the red planet's dirt.
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