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I Wondered That Too

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Posted by Alan on November 20, 2001 08:00:27 UTC

If you were an ant on an expanding balloon covered in drawings of circles; and you were standing in one circle; all the other circles would appear to be moving away from you in all directions you look along the balloon surface.

Your own circle would be getting bigger.

So how come we see galaxies moving away; but the walls of this room are not moving away? Because we must be expanding too. Like that girl in "Willy Wonka And The Chocolate Factory" who liked blueberries!

Where do they draw the line? I guess a photon is a ratio; ratios stay the same regardless of expansion.

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