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Comment by showerst

3 hours ago

"Space" is 100km. The moon at its closest is about 350,000km.

So the jump from the former to the latter is... significant.

Distance is usually the wrong measure in space. Something like delta-v will give you a much better scaling as once you manage to get something to orbit the rest is actually a lot closer than it would seem on the ground.

Not to say the effort somehow becomes peanuts, cheap, or easy... but the jump in delta-v needed to go from "100 km vertical ascent" to "hit the moon 350,000 km away" is more like a ~6-7x increase than a 3,500x one. If the moon were instead 700,000 km away the factor would still be ~6-7x.

Cool site for delta-v estimates https://deltavmap.github.io/

  • Wow even as a bit of a rocket nerd i'd never thought about it that way, that's pretty cool!