The universe could, in fact, be a giant doughnut, despite all of the evidence suggesting it’s as flat as a pancake, new research suggests.
Strange patterns found in echoes of the Big Bang could be explained by a universe with a more complicated shape, and astronomers have not fully tested the universe’s flatness, the study finds.
Related: What shape is the universe?
Flat surfaces
All observations so far suggest the universe is flat. In geometry, “flatness” refers to the behavior of parallel lines as they go out to infinity. Think of a tabletop: Lines that start out parallel will remain…
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News Source: https://www.livescience.com/the-universe-might-be-shaped-like-a-doughnut-not-like-a-pancake-new-research-suggests