NASA Is Sending Bacteria to the Edge of Space to See if They Can Hitchhike to Mars

Discovering life on another planet, only to contaminate that world with our own pesky microbes, is one of NASA’s nightmare scenarios. To find out whether single-celled Earthlings can hitchhike to Mars and survive on the Red Planet’s surface, NASA is going to see how they like it 120,000 feet up.
»9/26/15 5:00pm9/26/15 5:00pm