Thank you to Bombas for sponsoring this video! Head to https://bombas.yt.link/4osaIC0 and use code SABINE at checkout for 20% off your first purchase.
For a decade, two ways of measuring how fast the universe expands have given different answers, a problem known as the “Hubble tension”. Now a group of physicists says the problem isn’t the supernovae but how we read the cosmic microwave background. The culprit, they say, is something we’ve ignored: magnetic fields from the birth of the universe. Crisis averted? Let’s take a look.
Paper: https://doi.org/10.1038/s41550-025-02737-x
#sciencenews #physics #space #cosmology
?T-shirts, mugs, posters and more: ➜ https://sabines-store.dashery.com/
? Support me on Donorbox ➜ https://donorbox.org/swtg
? Transcript with links to references on Patreon ➜ https://www.patreon.com/Sabine
? Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/
? Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsletter/
? Audio only podcast ➜ https://open.spotify.com/show/0MkNfXlKnMPEUMEeKQYmYC
? Join this channel to get access to perks ➜
https://www.youtube.com/channel/UC1yNl2E66ZzKApQdRuTQ4tw/join
? Buy my book ➜ https://amzn.to/3HSAWJW