Dark Energy Is Dying: The Cosmological Crisis Nobody's Telling You About. Marcos Palerjo - #548

Into the Impossible With Brian Keating

Brian Keating

Physics, Natural Sciences, Science

4.7 • 1.1K Ratings

🗓️ 3 April 2026

⏱️ 22 minutes

🔗️ Recording | iTunes | RSS

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Summary

Please join my mailing list here 👉 https://briankeating.com/yt to win a meteorite 💥 Brian Keating takes us on an exclusive tour of the Royal Observatory Edinburgh with cosmologist Marcos Pellejero, exploring the mysteries of dark energy and the accelerating universe. From the historic halls where human "computers" shaped the foundations of modern cosmology, to the cutting-edge DESI experiment mapping galaxies across the cosmos, the conversation explores whether dark energy is truly constant—or if our cosmological model is beginning to show cracks. - Key Takeaways: 00:00 "Dark Energy and Cosmic Clues" 04:42 "Light Pollution Ruins Observatories" 07:03 Royal Astronomer's Electric Chair Solution 11:06 "DESI Challenges Vacuum Energy Constant" 15:48 "Advancing Simulations and Synergies" 19:14 "Science and Art: Problem Solving" 20:29 "Exploring Dark Energy's Secrets" - Join this channel to get access to perks like monthly Office Hours: https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join 📚 Get my books: Think Like a Nobel Prize Winner, with productivity tips from 9 Nobel Prize winners: https://a.co/d/03ezQFu Focus Like a Nobel Prize Winner, with life-changing interviews with 9 Nobel Prizewinners: https://a.co/d/hi50U9U My tell-all cosmic memoir Losing the Nobel Prize: http://amzn.to/2sa5UpA The first-ever audiobook from Galileo: Dialogue Concerning the Two Chief World Systems: Ptolemaic and Copernican https://a.co/d/iZPi9Un Follow me to ask questions of my guests: 🏄‍♂️ Twitter: https://twitter.com/DrBrianKeating 🔔 Subscribe https://www.youtube.com/DrBrianKeating?sub_confirmation=1 📝 Join my mailing list; just click here http://briankeating.com/list ✍️ Detailed Blog posts here: https://briankeating.com/blog 🎙️ Listen on audio-only platforms: https://briankeating.com/podcast #universe #podcast #briankeating #intotheimpossible #science #astronomy #cosmology #cosmicmicrowavebackground #darkenergy #Galaxysurveys #RoyalObservatoryEdinburgh #hubbletension #universeexploration #cosmicmysteries Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	Some of the strongest evidence that the universe is accelerating doesn't come from
0:07.6	one telescope or a single experiment.
0:10.3	It comes from a tiny ripple frozen into how galaxies cluster across the cosmos.
0:16.4	Today, from the Royal Observatory in Edinburgh, we're following that ripple with cosmologist Marcos
0:22.8	Pellehero to see what it really says about dark energy.
0:26.3	I'm Brian Keating, and this is an exclusive tour of the Royal Observatory Edinburgh with
0:30.5	cosmologist Marcos Pallero.
0:32.7	We'll go from this historic telescope to cutting-edge simulations to the DESE experiment, one of the most ambitious
0:38.8	galaxy surveys ever built, to ask a simple question, is dark energy really constant,
0:45.0	or is our entire cosmological model starting to crack?
0:49.2	Long before silicon chips, the computers up here weren't machines, they were people.
0:54.0	Often they were women hired
0:55.0	to comb through photographic plates measuring every faint smudge of light by hand. Their names
1:01.4	rarely made it into papers, but their measurements are literally baked into the data sets
1:06.1	we still build our modern cosmological models on. This building was designed as a cathedral for starlight.
1:13.2	The telescope sits on a massive pier that sinks onto the hill, isolated from the floor,
1:17.9	so footsteps don't shake the images.
1:20.3	As our cities grew brighter, places like this became less useful for frontline observing,
1:25.0	but the engineering mindset behind them is still the same one we still
1:28.1	use today to measure the universe's properties.
1:31.2	This is a picture of the family of the Royal Astronomer before this place had no house
1:36.9	anymore, okay, for them.
	...

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