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I think we're pretty familiar with vacuum at this point. The obstacle to practical interstellar travel is 99.99999% propulsion, which you don't learn a lot abo
by idlewords 12y ago
I think we're pretty familiar with vacuum at this point. The obstacle to practical interstellar travel is 99.99999% propulsion, which you don't learn a lot about by endlessly falling in a circle.
- XorNot 12y agoAnd the obstacle to propulsion is the inability to lift large payloads cheaply enough into orbit to start with. The problem is we can't build big things in LEO. At the moment its that our entire LEO-access infrastructure is woefully underdeveloped.