Biggest Discoveries in Space Exploration: 25 Unanswered Questions About The Universe: Every now and then, you hear something ...

If you’re anything like us sci-fi geeks, you probably spent your childhood dreaming of becoming an astronaut when you grew up. And maybe you still kind of hope to turn that dream into reality someday.

Since the first crew of astronauts reached the International Space Station on Nov. 2, 2000, humanity has had a continuous presence among the stars.

50th anniversary of Alan Shepard's Freedom 7 flight. May 5, 2011 — -- Fifty years ago today, astronaut Alan Shepard squeezed into a tiny Mercury capsule and challenged the heavens. He called his ...

If you’re anything like us sci-fi geeks, you probably spent your childhood dreaming of becoming an astronaut when you grew up. And maybe you still kind of hope to turn that dream into reality someday.

Discover interesting facts about how the moon formed, what it's made out of, and the many missions humans have launched to ...