What Kinds of Life Forms Could Actually Live on Mars?

Yesterday, NASA reignited our hopes of finding alien life when it announced the first direct evidence of liquid water on Mars. But before we start indulging in fantasies of space crabs and reptilian beings, we ought to remember that Mars is a frigid world with a thin atmosphere. And that raises an obvious question:… »9/29/15 3:03pm9/29/15 3:03pm

Mars Mission Chooses 100 People Best Suited to Dying on Another Planet

Sure, the planned civilian mission to Mars is wildly unrealistic, and if it even if we got there everyone would probably starve, but it's still fun to think about. That's especially true when it comes to deciding what 100 people should be banished to space, never to return, as Mars One did today. »2/17/15 10:52am2/17/15 10:52am

NASA's Opportunity Has Now Explored the Martian Surface for 11 Years

Eleven years ago today—in fact, at this very minute (12:05 am ET)—NASA's Opportunity rover touched down on Mars for what was supposed to be a 90-day mission. Since then, Opportunity has proven to be an engineering marvel by traveling almost 26 miles on the Martian surface, more than any other off-Earth surface vehicle. »1/25/15 10:00am1/25/15 10:00am

It's Been a Full Decade Since We Landed the Spirit Rover on Mars

On January 4, 2004, the first of two identical robotic exploratory rovers, NASA's Spirit, snapped this stunning 360 degree image of its surroundings, moments after setting down on Mars. In the years to follow, both Spirit and its sister Opportunity helped revolutionize our understanding of the Red Planet. »1/04/14 1:28pm1/04/14 1:28pm

This Is What Happens When You Drive Through Three Miles Of Mars

NASA's Curiosity rover has been on Mars for over a year now, and in the time has traversed nearly three miles. While its wheels are made of high-grade aluminum, they're not strong enough to last forever. NASA announced this week it was taking an extra-long look at the wheels, and boy are they in rough shape. »12/22/13 11:18am12/22/13 11:18am