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gwern comments on [LINK] Waitbutwhy article on the history and future of space exploration, SpaceX and more - Less Wrong Discussion

3 Post author: LizzardWizzard 08 September 2015 11:14AM

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Comment author: gwern 08 September 2015 08:08:12PM 2 points [-]

Not even all that high - water is pretty common...

Comment author: Lumifer 08 September 2015 08:14:57PM *  1 point [-]

Basically, the price of energy to split water into oxygen and hydrogen is a hard ceiling for the price of hydrogen.

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