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Questions Series: How do we know the size of the Universe?

21 Dec 2014, 01:50 UTC
Questions Series: How do we know the size of the Universe?
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A set of questions I get from kids and adults alike while doing my Astronomy in Action planetarium shows consists of the following: Does the Universe have an end? How big is the Universe? Where is the center of the Universe? What is the ‘Observable Universe?’ How is it different from just saying ‘the Universe?’ […]

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