New Theory Inspection: Is the Universe a Bubble? I had a look // TRAIN BRAIN

New Theory Inspection: Is the Universe a Bubble? I had a look

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I recently saw a new paper that claims our observations could be better explained if the universe was surrounded by a shell. According to the author, that could do away with dark energy and alleviate the Hubble tension. I had a look at the paper.
The paper is here https://www.mdpi.com/2674-0346/3/3/14
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Sabine Hossenfelder

As simple as possible, but not any simpler! Science and technology updates and summaries. No hype, no spin, no tip-toeing around inconvenient truths. Currently 5 videos a week (Tue-Wed-Thu and Sat-Sun). Early access for channel members. Sabine Hossenfeld...

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