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Neil deGrasse Tyson

@neiltyson

Astrophysicist

calendar_today29-01-2009 18:40:26

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Neil deGrasse Tyson
@neiltyson

4 years ago

While you’re watching…

If the Football field were a timeline of the 14-billion year old Universe, with the Big Bang at one end, then at the other end, the width of a single blade of grass spans 30,000 years of human history, from Cro-Magnon to the present.

While you’re watching… If the Football field were a timeline of the 14-billion year old Universe, with the Big Bang at one end, then at the other end, the width of a single blade of grass spans 30,000 years of human history, from Cro-Magnon to the present.
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