Gravity Wells

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This doesn't take into account the energy imparted by orbital motion (or gravity assists or the Oberth effect), all of which can make it easier to reach outer planets.

Well this is pretty neat. See if you can spot Carl Sagan!
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1 comment:

  1. Unknown29 December 2009 at 00:17

    I saw him! Nice to see you've got an xkcd comic in your blog, I'm fairly sure that makes it official!

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