Others have linked to it but I'm gonna anyway: XKCD graphically and simply explains gravity wells.
Stolen entire from Roberta X.
Silicon Forest
If the type is too small, Ctrl+ is your friend
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Silicon Forest
If the type is too small, Ctrl+ is your friend
1 comment:
Astronomy joke of 2009 :
Despite being in massive
trouble, Tiger Woods was unable to exceed escape velocity...
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