This question is known as the Fermi Paradox and still remains unanswered. However, some theories could offer potential solutions.
Physicist Brian Cox explains the paradox and tells us our best guesses as to why we are so isolated.
0:00 Who is Enrico Fermi?
0:22 What is the Fermi paradox?
1:29 Rare earth hypothesis
2:41 Extinct civilizations
3:51 Technological singularity
4:34 Great distances
5:14 Cosmic quarantine
7:31 The Great Filter
9:51 a.m. The great silence
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About Brian Cox:
Brian Cox obtained an honors degree in physics from the University of Manchester in 1995 and in 1998 a PhD. in high-energy particle physics at the DESY laboratory in Hamburg. Brian is now Professor of Particle Physics at the University of Manchester, a Royal Society Professor for Public Engagement in Science and a Fellow of the Royal Society.
Brian is widely recognized as the leading communicator for all things science, having presented a number of highly acclaimed science programs for the BBC, watched by billions of people around the world, including 'Adventures in Space and Time' (2021 ), “Universe” (2021), “The Planets” (2018), “Forces of Nature” (2016), “Human Universe” (2014), “Wonders of Life” (2012), “Wonders of universe” (2011) and “Wonders of the solar system” (2010).
As an author, Brian has also sold over a million books worldwide, including “Black Holes,” “Universal: A Guide to the Cosmos,” “Quantum Universe,” and “Why Does Emc2?” with co-author Professor Jeffrey Forshaw. He also wrote a series of books to accompany his popular television and radio programs.
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