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more about #hypersonic more comments → cljohnston108: Oh, that's what I forgot! My bad! [en.wikipedia.org] more » cljohnston108: ...and generate speeds above 25,000 mph. Sweet Boneless Christ! That's "escape velocity"! Spacecraft only need to go 17,500 mph to maintain orbit! And... more » Belabras: I kinda want to have my next birthday party there now. Seriously though, that is quite cool. more »

