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What is an Astronomical Unit? How big is an Astronomical Unit?

Wednesday, May 7th, 2008

When dealing with measurements on an orbital scale, you have to think big. As my previous astronomy posts have shown, the distances are vast. Though humans see and use numbers like million, billion and trillion all the time, our brains have a tough time conceptualizing what those numbers really translate to. How often, for example, [...]

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