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Latest Data Challenges 25 Years of Cosmology

Have a look at the science courses at Brilliant! First 30 days are free and 20% off the annual premium subscription when you use our link ➜ https://brilliant.org/sabine. There’s something crazy going on in the world of physics right now. According to new data from the Dark Energy Spectroscopic Instrument (DESI), the cosmological constant might not actually be constant, rather, it is decreasing and had a “phantom crossing”. What does that mean? I have a quick summary of what's new. Correction to what I say at 4:30 -- The "Big Rip" requires dark energy to grow not just stay constant, I said this badly. This video comes with a quiz which you can take here: https://quizwithit.com/start_thequiz/... 🤓 Check out my new quiz app ➜ http://quizwithit.com/ 💌 Support me on Donorbox ➜ https://donorbox.org/swtg 📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/ 👉 Transcript with links to references on Patreon ➜   / sabine   📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle... 👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl... 🔗 Join this channel to get access to perks ➜    / @sabinehossenfelder   🖼️ On instagram ➜   / sciencewtg   #science #sciencenews #physics