Quote:
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Originally Posted by Ken G
it's clear that you'd have to convert most of the rest mass of
your ship into energy to make it work.
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That's a monumental understatement.
Just to put real spacecraft such as the Space Shuttle into orbit
requires that more than 80% of the gross liftoff weight is fuel.
-- Jeff, in Minneapolis
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"I find astronomy very interesting, but I wouldn't if I thought we
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