23:45

Fermi's Paradox and the Psychology of Galactic Empires | Matthew O´Dowd | TEDxTUWien

22:31

Filling the Big Gap in Einstein’s Theory | Paul Steinhardt | TEDxCLESalon

20:10

The Unusual Earth Orbit Circling Above Our Ancient Past | Roger G. Gilbertson | TEDxColoradoSprings

16:20

What space telescopes teach us about the universe | Amber Straughn | TEDxCapeMay

16:34

Einstein Was Right: Gravitational Waves 101 | Rainer Weiss | TEDxNatick