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pishpash
on July 21, 2018
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A drug for smallpox has been approved, even though...
Retrorockets and landing backwards have been around (e.g. the Apollo lunar module). The
rockets
landing backwards thing is hard for a different reason among many other things, namely the inverted pendulum problem.
duxup
on July 21, 2018
[–]
I get what you're saying but... the first part is obviously not what I was saying ;)
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