Re:Speculoos-2c: A new potentially habitable earth
by shireboy on Wednesday September 07, 2022 @08:15AM
(#32749589)
Assuming organisms adapted to live there, it would be harder for them to reach escape velocity to leave their planet. Is there a cut-off where known physics says it’s impractical to leave a planet? Ie the most powerful practical fuel wouldn’t be enough for any mass to reach escape velocity?
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Re:Speculoos-2c: A new potentially habitable earth
by jmillikin on Wednesday September 07, 2022 @08:27AM
(#32749683)
https://space.stackexchange.com/questions/14383/how-much-big...
There's a table in that link of how much reaction mass is needed to reach orbit. At 1.5g it requires about 500% as much rocket as Earth. At 2.5g the number is ... much larger.