Experts still aren't sure how the sixth military branch would actually work.
Reflections from a prodigious force in space exploration.
We all like having options.
Europa, the outer solar system, and a lot of questions.
For your favorite space enthusiast, go above, to infinity, and beyond.
To gain an edge here on Earth, China is pushing ahead in space
A lesson from the Apollo missions
A 29-year Gap in their space knowledge
For the moon, Mars, and beyond
Going to Alpha Centauri "within a generation"
Shooting for the stars.
The baron of low-Earth orbit
Ky Michaelson is basically Max Valier reincarnated
Coverage begins Tuesday at 4:15 PM Eastern
The next big step towards sending humans to Mars
Now it's up to President Obama to decide whether Earth businesses can own pieces of asteroids
The ISS just celebrated its 15-year anniversary yesterday. Could it survive another 15?
China's most powerful rocket engine makes a successful debut
A controversial bill would give companies the right to own natural resources in space, and it may pass in the Senate by the end of September
With environmentally friendly engines
Will there be horrible consequences? Live video right here
Human hibernation could be a great way to get to Mars (and beyond), but a few big questions remain.