How big is the universe?

How big is the universe? While it is generally known that the universe is very big, the latest science reveals that its true size defies all comprehension. In this episode we tackle the question of how big the universe is, whether or not it is infinite, and what the consequence are for us all if it is. If the universe is big enough, it guarantees the existence of aliens, mirror Earths, and even copies of you living in the distant past and far future. Beginning: 00:00 Episode start: 00:25 Historic views: 00:50 Copernican view: 2:24 Other star systems: 3:13 Many galaxies: 5:40 The modern view: 7:35 Ancient radiation: 8:48 Where the bang happened: 10:18 Size of the bang: 11:47 Cosmic inflation: 14:32 Eternal inflation: 19:01 String theory landscape: 21:21 Mathematical universe: 25:13 How big reality is: 28:05 Consequences of infinite space: 31:00 We're not alone: 31:40 You have doppelgängers: 32:43 You've lived before: 34:33 Does god exist? 35:24 Credits: 36:12 Other formats: Podcast: