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Comment Re: Signed up to go to Mars ? (Score 1) 144

Delta rockets run on hydrogen and oxygen. Atlas uses kerosene and oxygen. Falcon uses kerosene and oxygen. Blue Origin's smaller engine uses hydrogen and oxygen, and the big one under development uses methane and oxygen. SpaceX's new engine under development uses methane and oxygen. Soyuz uses oxygen and kerosene. Long March (other than 2) uses oxygen and kerosene.

Methane is somewhere in the neighborhood of $0.0025 per kg. NASA's numbers from 2001 say hydrogen was $3.66 per kg and oxygen was $0.16 per kg. Kerosene is $0.79 per kg.

UDMH is not a common rocket fuel. Other than Long March 2F and Proton, you don't see a lot of UDMH outside of upper stages (because it's ridiculously nasty stuff, expensive, hard to work with, and doesn't provide very good specific impulse. Really the only redeeming quality of the stuff is that it's hypergolic with various oxidizers.

Comment Re:Stupid (Score 1) 128

This doesn't make sense, currently. While you are absolutely correct that theaters make little on the seats themselves (as I understand it, the studios take a percentage of each ticket sold, which starts at "nearly everything" in the first weeks, and diminishes to "very large percentage" later on), MoviePass subscribers pay exactly the same to the theater that any other purchaser does. MoviePass doesn't (yet) have special deals with theaters for lower ticket prices. A theater full of MoviePass subscribers represents exactly the same ticket revenue as one without any MoviePass subscribers. There's also the theory that a moviegoer who paid nothing for a ticket might be more likely to spend on concessions.

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