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Where are all the aliens? | Stephen Webb
TED
16 ส.ค. 2018
การดู 4,327,181 ครั้ง
The most mysterious star in the universe | Tabetha Boyajian
Why haven’t we found aliens? A physicist shares the most popular theories. | Brian Cox
Government Breaks Silence: Strange Encounters | UFO's Investigating the Unknown
Why does the universe exist? | Jim Holt | TED
Brian Cox Debates If Aliens Have Visited Earth?
Why are these 32 symbols found in caves all over Europe | Genevieve von Petzinger | TED
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Ancient Aliens: Inside Area 51's UFO Secrets
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SciCafe: Life the Universe and Everything with Neil deGrasse Tyson
Why Have We Not Found Any Aliens? - with Keith Cooper
After watching this, your brain will not be the same | Lara Boyd | TEDxVancouver
"Zero Doubt" Non-Human Intelligence on Earth - Col. Karl Nell & Alex Klokus | SALT iConnections NY
Michio Kaku: The Universe in a Nutshell (Full Presentation) | Big Think
What Happens If We’re Contacted By Aliens? | Alien Documentary | Spark
Why We are Alone in the Galaxy | Marc Defant | TEDxUSF
The story of 'Oumuamua, the first visitor from another star system | Karen J. Meech | TED
Why we should search for alien artifacts | Beatriz Villarroel | TEDxZurich
Does Math Reveal Reality?