Could there be an edge to our Universe?
Many theories for what could be beyond the Universe are truly mind-bending.
Cosmologist Andrew Pontzen, from University College London, explores some possibilities and looks at whether there's any way humans could exist beyond the hypothetical edge.
https://www.bbc.com/reel/video/p07fnfpj/could-there-be-an-edge-to-our-universe-
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