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23 Times Neil DeGrasse Tyson Was So Sassy It Hurt

Astrophysicist with attitude. 1. On the end of the world: In 5-billion years the Sun will expand & engulf our orbit as the charred ember that was once Earth vaporizes. Have a nice day — neiltyson (@Neil deGrasse Tyson) 2. On measuring the length of blood vessels: Just an FYI: If you removed all veins, […]

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