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# What If The Universe Did Not Start With The Big Bang?
- URL: https://www.cascadepbs.org/show/pbs-space-time/episode/what-if-the-universe-did-not-start-with-the-big-bang-vvof3y/
- Published: 2024-10-07T20:45:53.000Z
- Updated: 2025-08-21T13:47:10.000Z
- Description: Here’s the story we like to tell about the beginning of the universe.
- Author: Cascade PBS Staff
- Tags: PBS Space Time, Season 10, Episode 22, #ZZZ_Episode_6caa0574-f56b-48e3-8d0e-d387581205ff, #episode, #ZZZ_Show_ae70f836-13b6-4c9d-b61f-99f7b8bc29eb, #v1.16

Space is expanding evenly everywhere, but if you rewind that expansion you find that all of space was once compacted in an infinitesimal point of infinite density—the singularity at the beginning of time. The expansion of the universe from this point is called the Big Bang. We like to tell this story because it's the correct conclusion from the description of an expanding universe that followed