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A comment on Seven earth-sized planets discovered circling a star 39 light years from Earth. Parent comment

Re:Seven earth-sized planets discovered circling a star 39 l... by aaronblohowiak on Wednesday February 22, 2017 @01:48PM (#13708034)
I think we do if you look at it in terms of acceleration. As I understand it, In space there is almost 0 friction so "fast" is more about acceleration than "top speed". In this view, 1g isn't that fast.
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Re:Seven earth-sized planets discovered circling a star 39 l... by xigency on Wednesday February 22, 2017 @01:51PM (#13708070)
About as "fast" as a helicopter at a stable altitude, or to fit with the no-atmosphere bit, a stationary jetpack or lunar lander (on Earth).
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Re:Seven earth-sized planets discovered circling a star 39 l... by wallace_f on Wednesday February 22, 2017 @01:55PM (#13708115)
Doesn't energy required to accelerate keep exponentially increasing, though? ke = mv^2
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Re:Seven earth-sized planets discovered circling a star 39 l... by aaronblohowiak on Wednesday February 22, 2017 @02:42PM (#13708531)
Energy is relative to a frame of reference, and IIUC 1g acceleration of the space vessel is in The vessel's frame of reference, not earth's.
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