This is why
they are looking at making fuel in space or low G bodies because once you are in space it takes relatively little fuel to get anywhere.
One interesting plan is to set up a moon base to mine for elements which can be used to make fuel.
Takes a lot less to get stuff into space from the moon.
www.technologyreview.com/2020/05/19/1001857/how-moon-lunar-mining-water-ice-rocket-fuel/
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My Name was saying these words inside your head on, Fri 29 May 2020, 10:06,
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