New Solution to the Fermi Paradox Found. Scientists Hope They're Wrong
30:19
The Hidden Dangers of Discovering a Type-7 Civilization: Should We Be Worried?
1:31:07
How The Earth Was Made: From Molten Rock to Green Planet | Full Special
30:43
THE SIGHTS OF SPACE: A Voyage to Spectacular Alien Worlds
1:15:19
What Actually Are Space And Time?
53:19
Einstein's Quantum Riddle | Full Documentary | NOVA | PBS
3:14:00
DÜNYA DIŞI YAŞAM | UFO'lar, Uzaylılar, Medeniyetler
50:48
What Happens If We’re Contacted By Aliens?
17:29