Five Billion Years of Solitude: Lee Billings on the Science of Reaching…

What's stopping humans from living in space? The problem isn't just a loss of political will to finance human space flight. Rocket science turns out to be rocket science - not easy, and constrained by some very real limitations dictated by material science, the physics of acceleration, and the unwieldy economics of… » 10/09/12 1:13pm 10/09/12 1:13pm