Space colonization has reached an impasse, for reasons far more fundamental than a lack of money for the Space Shuttle program. There is simply no way humans can travel easily offworld without using massive amounts of rocket fuel to escape the gravity well — and that's both expensive and environmentally unsustainable. So how will we get off this rock?
via Gizmodo http://ift.tt/1zLDkqu http://ift.tt/1xiP8un
No comments:
Post a Comment