Why havent we found aliens A physicist shares the most popular theories Brian Cox By: Big Think

Why Alien Life Would be our Doom The Great Filter By: Kurzgesagt – In a Nutshell

Are we living in a simulation Zohreh Davoudi By: TED-Ed

Dark matter The matter we cant see James Gillies By: TED-Ed

Calculating The Odds of Intelligent Alien Life Jill Tarter By: TED-Ed

Brian Cox Debates If Aliens Have Visited Earth By: High Performance