posted by friends:
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posted by friends of friends:
(4)
@brainpicker: How far is Mars? Superb interactive visualization http://t.co/SVISP5BGC4 More ways to grasp the scale of the universe http://t.co/0FnJ6fRnGa
@freeeky: Distance to Mars.... in pixels. in many many many many many many many many many many many many pixels. -- http://t.co/4qogs6heqe
@jangles: How far is it to Mars? http://t.co/ZXkgwnnmdu via @DavePaliwoda < quite an odyssey, very imaginative / cc @GabrielleNYC
@natannikolic: If the earth was 100 pixels wide - http://t.co/y6ZPJw3nr3
