Addressing the Biggest Controversies in Modern Cosmology with George Efstathiou [Ep. 436]

Into the Impossible With Brian Keating

Brian Keating

Science, Physics, Natural Sciences

4.7 • 1.1K Ratings

🗓️ 7 July 2024

⏱️ 58 minutes

🔗️ Recording | iTunes | RSS

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Summary

Join my mailing list https://briankeating.com/list to win a real 4 billion year old meteorite! All .edu emails in the USA 🇺🇸 will WIN! Modern cosmology is full of controversies, challenges, and unresolved tensions. This can, of course, be very frustrating. But it’s also extremely fun! Especially if we approach these challenges with brilliant minds who aren’t afraid to tackle them head-on. One such luminary is the renowned George Efstathiou. George is a British astrophysicist and Professor of Astrophysics at the University of Cambridge. He was the first Director of the Kavli Institute for Cosmology at the University of Cambridge from 2008 to 2016. George joins me today for a cosmological episode in which we look at cosmic acceleration, Hubble tension, Sigma-8 tension, inflation theory, BICEP2, Planck collaboration, and more. Tune in! Key Takeaways: 00:00:00 Intro 00:04:25 Baseless claims in cosmology 00:13:57 Solving the Hubble tension 00:23:11 Axion-like early dark energy 00:28:03 Primordial magnetic fields 00:30:36 Solving the Sigma-8 tension 00:38:37 Inflation and the Multiverse 00:48:30 BICEP2 00:54:50 Existential question 00:56:42 Outro — Additional resources: 📝 Get one month of Snipd Premium for free with this link: https://get.snipd.com/Cx7S/brianSnipd Snipd lets you take Smart Notes 🧠 with AI 💡 — it’s my favorite podcast player 😀 ! ➡️ Learn more about George Efstathiou: 💻 Website: https://people.ast.cam.ac.uk/~gpe/ ➡️ Follow me on your fav platforms: ✖️ Twitter: https://twitter.com/DrBrianKeating 🔔 YouTube: https://www.youtube.com/DrBrianKeating?sub_confirmation=1 📝 Join my mailing list: https://briankeating.com/list ✍️ Check out my blog: https://briankeating.com/cosmic-musings/ 🎙️ Follow my podcast: https://briankeating.com/podcast Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known. Make sure to subscribe so you never miss an episode! Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	I hate to say it because my own which is one of those fields where the mysteries only seem to grow the more we learn
0:05.8	it can be extremely frustrating, but it's also tons of fun.
0:09.8	We're so grasping at the elusive nature of dark matter, wrestling over the persistent Hubble
0:15.8	tension and grappling with the puzzle of Barryani symmetry.
0:20.0	And most of all, puzzling over one of the most frustrating questions of all, is dark energy truly behind our universe's accelerated expansion?
0:28.7	Luckily today, we're blessed with one of the most brilliant minds in the universe.
0:33.4	George of Stadio, a professor at the University of Cambridge and the first director of the
0:38.0	Kovley Institute for Cosmology.
0:39.8	Today he shares some counterintuitive wisdom that absolutely blew me away.
0:43.7	He's joining us today to drop some more big bang-sized truth bombs on us to address the
0:48.8	anxieties, tensions and curiosities that plague cosmology, but also make it the most fascinating subject
0:55.9	manageable.
0:56.9	So let's get to it. Any sufficiently advanced technology is indistinguishable from magic.
1:10.0	Open the pod bay doors now.
1:14.0	First I want to ask you George. I always ask people what's your favorite day on the calendar for you. I think it might be in September, but the reason I ask that is because the origin of your
1:26.2	birth or of some significant event is always something special.
1:31.8	And so I want to ask you about your origin story
1:34.1	starting back some decades ago so tell me please how did what's your past
1:39.4	world line look like it's kind interesting. You know my parents were both born in Cyprus and moved into, they moved to the UK after the Second World War. So my father came in 1949 and my mother came a couple of years later and they met in the UK and at that time in a
2:00.8	Cyprus was British colony and you know the Brits were looking to
2:08.7	the colonies you know come to the UK and help rebuild the motherland after the war.
2:17.0	So, you know, so, so, so that's how my parents ended up here so as part of this you know quite significant
	...

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