Does The Universe Have A Shape?

News: The Curiosity Podcast is here! Subscribe on iTunes, Stitcher, Google Play Music, SoundCloud and RSS.

Scientists have proposed many models to sum up the shape of the universe, though it's difficult to represent something that's both infinitely vast and (at least) four-dimensional. The three types of universe shapes that are commonly discussed are positively curved, negatively curved, and flat. As of 2015, evidence points to a flat universe over the other two models.


Love getting smarter? Sign up to our newsletter and get our best content in your inbox!

Share the knowledge!

Key Facts In This Video

  1. There are three main proposed models for the shape of the universe: positively curved, negatively curved, and flat. 01:22

  2. A negatively curved universe would look like a four-dimensional saddle, and would contain too little energy to ever stop expanding. 02:56

  3. One negatively curved model of the universe resembles a trumpet. 04:26