Mr. Barge

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Expanding Universe

This morning the teachers were talking about the way that the universe expanding, and what we see as galaxies move away from us. A standard analogy is to think about baking a loaf of bread with raisins. As the bread bakes, and rises, each raisin moves away from each other since the bread expands.

check out http://hyperphysics.phy-astr.gsu.edu/ for a more full explanation.

I saw the video below some time ago, I think it helps to see this idea of expansion a little more clearly (you can stop watching at 11:25).

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