# Is our universe the only universe?

- Institution: TED
- Department: TED2012
- Speaker: Brian Greene
- Year: 2012
- Level: For everyone
- Language: English
- Subjects: Mathematics, Physics, Astronomy and space
- Source: [TED](https://www.ted.com/talks/brian_greene_is_our_universe_the_only_universe)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Is there more than one universe? In this visually rich, action-packed talk, Brian Greene shows how the unanswered questions of physics (starting with a big one: What caused the Big Bang?) have led to the theory that our own universe is just one of many in the "multiverse."

## Lectures

1. [Is our universe the only universe?](https://invisiblenetwork.ai/learn/ted/brian_greene_is_our_universe_the_only_universe/cb100de20102), 22 min (TED's player)