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Fraser
2017-May-11, 12:21 AM
Measuring about 91 billion light years in diameter and being 13.8 billion years old, the Universe encompasses all matter, energy, time and space in existence.
The post What is the Universe? (https://www.universetoday.com/36425/what-is-the-universe-3/) appeared first on Universe Today (https://www.universetoday.com).


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