Cosmos: A Spacetime Odyssey - Episode 7 [Eng-Subs] "The Clean Room" - Video Dailymotion

INDI TV Series

The tempestuous youth of the Earth effectively erased all traces of its beginnings. S how did we ever learn its true age? World-renowned astrophysicist Neil deGrasse Tyson reveals the answer.

Cosmos: A Spacetime Odyssey - Episode 7 [Eng-Subs] "The Clean Room"

INDI TV Series より