This still gives me chills.Carl Sagan demonstrates how the Greeks figured out the Earth was round and correctly calculated its circumference — 2,000 years ago: https://t.co/M5cBbL87yK— Ali A. Rizvi (@aliamjadrizvi) September 18, 2019
This still gives me chills.Carl Sagan demonstrates how the Greeks figured out the Earth was round and correctly calculated its circumference — 2,000 years ago: https://t.co/M5cBbL87yK