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.
Driving on Earth is tough enough. What happens when you throw in craters, unexpected solar events and backseat driving from your fellow astronauts while you bump over the moon?
Don't worry. We still love you, Earth, but we've been wondering about the possibility of life on other worlds for centuries, and now we have the tools to do some exploring. What have astronomers found so far?