Create an apparatus for viewing sunspots, Search for extraterrestrial life, and see a live web cam of Mars.

Exactly how hot is the sun? Can astronauts sleep standing up? And is it possible to escape the Event Horizon of a black hole?

What is a Brown Dwarf? What's the difference between a meteor and a falling star? What are solar winds? The Learning Center provides all the answers…

Your mission: Help scientists plan a mission to a comet. Design your own spacecraft. And protect the international Space Station from space debris.