It's one small step for man, one giant step toward becoming Zenon from those Disney Channel movies! Looks like space could be invaded by us soon, as NASA has announced a plan to open the International Space Station to commercial activities, including space tourism! It won't be cheap, however. The estimated cost for a private astronaut to visit the Space Station would be around $58 million, not including costs of about $35,000 per day in space. Astronauts would have the opportunity to stay for up to 30 days, and trips could begin as early as 2020. That means you still have time to become an astronaut and raise $58 million. Who's in?!