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Braden Davenport
Physics
4 February, 05:03
What do we mean by the observable universe?
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Ryker Hanna
4 February, 05:26
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The observable universe is a spherical region of the Universe, comprising all matter that can be observed from Earth at the present time, because light and other signals from these objects have had time to reach Earth since the beginning of the cosmological expansion.
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