COSMICBREEZE72
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Registered: 01-2017
Location: The cosmos
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Astronomers Reveal That All Galaxies Rotate Once Every Billion Years
Astronomers have discovered that all galaxies rotate once every billion years, no matter how big they are.
https://scitechdaily.com/astronomers-reveal-that-all-galaxies-rotate-once-every-billion-years/
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ALIEN ROCK GEMSTONE
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Mar/15/2018, 9:40 am
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