2 years agoCarl Sagan demonstrates how the ancient Greeks knew the Earth was round. Amazingly crystal clearAymanSayedAly
1 year agoA Retelling of Carl Sagan's Pale Blue Dot - Because You Didn't Hear it the First TimePower Of Thought
3 years agoCarl Sagan Time Dilation Ship or Earth time, OLD EARTH YOUNG EARTH EXPLAINEDDOES GOD EXIST
3 years agoDakota Frandsen Presents: Carl Sagan - A Personal Voyage by BBC Radio (made with Spreaker)Dakota Frandsen