Neil deGrasse Tyson

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Last Checked May 18, 2019

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Sat Mar 17 21:35:22 +0000 2012

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Neil deGrasse Tyson @neiltyson

Mid-19th century, a mysterious element was discovered in galactic nebulae. It emanated deep GREEN. Dubbed "nebulium" — PolitiTweet.org

Posted March 17, 2012 Hibernated

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Neil deGrasse Tyson @neiltyson

The peak sensitivity of the Human Retina is GREEN, matching the peak spectral output of the Sun. — PolitiTweet.org

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Neil deGrasse Tyson @neiltyson

By the 1920s the GREEN-emitting element nebulium was ID'ed as oxygen, but behaving oddly in the rarefied conditions of space. — PolitiTweet.org