Somewhere in Universe
作者: mica.mala
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作者 | mica.mala |
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每日使用者數 | 4 |
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Solar System is embedded in a galaxy composed of billions of stars, the Milky Way, and that other galaxies exist outside it, as far as astronomical instruments can reach. Discovery of the red shift and cosmic microwave background radiation revealed that the universe is expanding and apparently had a beginning.
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