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4 September, 08:31

What do we mean when we say that the universe is expanding?

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  1. 4 September, 11:48
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    When scientists say that the universe say that the universe is expanding, theymean that the actual distance between any astronomical objects is increasing as time increases ... That is to say, it is expanding outward and the galaxies/stars/etc. are all getting farther apart from one another.
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