From satellites to the moon, NASA has conducted dozens of successful missions to space. These are some of the most famous. We'll start with a look at NASA's first space station.
Doomsday theorists might expect 2012 to be a year of ray-gun-style solar flares, but their assumptions aren't at all backed up by science. What are solar flares, and what happens if they really do hit the Earth?
Relying on a collapsed star to power our lives on Earth might seem like a good solution to our energy crisis, but there's just one tiny problem: The process might be lethal.