Neil deGrasse Tyson @neiltyson
@eastcstwestcst @dmaoutdoors The lunar month, the solar year, and the Cesium 133 Atomic Clock come from the physics of the universe, and so are not contrived by humans. — PolitiTweet.org
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Sat Feb 13 03:07:37 +0000 2021
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Likely AvailableNeil deGrasse Tyson @neiltyson
@eastcstwestcst @dmaoutdoors The lunar month, the solar year, and the Cesium 133 Atomic Clock come from the physics of the universe, and so are not contrived by humans. — PolitiTweet.org