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[xkcd] Gravity Wells


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#1 Hydrogen

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Posted 27 December 2009 - 09:00 PM

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.

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#2 Vexage

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Posted 28 December 2009 - 02:14 AM

My head hurts.

#3 Melchoire

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Posted 28 December 2009 - 03:19 AM

Is this something new that the artist came up with? I've never heard of it, but it's kinda clever =]

#4 Zhuris

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Posted 28 December 2009 - 03:35 AM

Melchoire, you mean gravity wells? They're nothing new, unfortunately - though xkcd does tend to have some pretty original and clever graphics like these.


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