Has JWST SOLVED the crisis in cosmology?!
399,851
Published 2024-04-11
My previous videos on the "crisis in cosmology" - • The Crisis in Cosmology
My video from earlier this year on the JWST result showing that overcrowding wasn't the problem - • JWST rules out MOST LIKELY culprit fo...
APS meeting schedule with Wendy Freedman’s talk - meetings.aps.org/Meeting/APR24/Session/S01.2
Hu & Wang (2023; list of new physics hypothesis beyond best model of the universe) - arxiv.org/pdf/2302.05709.pdf
Riess et al. (2024; hubble tension not due to crowding problem) - arxiv.org/pdf/2401.04773.pdf
DESI collaboration (2024; H(z) and H0 measurements) - arxiv.org/pdf/2404.03002.pdf
Lee et al. (2023; JAGB stars as standard candles) - arxiv.org/pdf/2305.02453.pdf
Bellazzini et al. (2004; TRBG stars as standard candles) - arxiv.org/pdf/astro-ph/0404572.pdf
Planck collaboration (2018; latest best model of the Universe parameters) - arxiv.org/pdf/1807.06209.pdf
Royal Society meeting with Wendy Freedman talk - royalsociety.org/science-events-and-lectures/2024/…
00:00 Introduction
03:17 AD Ground News
04:54 What is the Hubble Tension (aka the "crisis in cosmology")?
07:40 The possible explanations/solutions for the Hubble tension?
14:22 What Freedman et al. are claiming to have found with JWST
18:32 How does this compare to previous work on this with JWST?
20:30 What now? Is the “crisis in cosmology” really over?
22:57 Bloopers
Video filmed on a Sony ⍺7 IV
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👩🏽💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an answer online - you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.
drbecky.uk.com/
rebeccasmethurst.co.uk/
All Comments (21)
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At this point, I feel like JWST is the driver of a family sedan and the scientific community is a pile of kids in the back asking "Are we there yet?!?" =)
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18:52 "this isn't just cutting-edge science; this is like standing on the knife edge and staring into the void of confusion" I am going to reuse this in my line of work at the first chance I get
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"standing on the knife edge and just staring into the void of confusion" is my new favourite sentence
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Thank you for labeling the ads. This is what all channels should do.
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Okay, I'm going to invoke Ian Hinchliffe's Rule, which technically only applies to particle physics, but can be extended to research papers of all types and now YouTube videos, "if a research paper's title is in the form of a yes–no question, the answer to that question will be 'no'" But you may ask "Is Hinchliffe's rule correct?" and cause a universe-rending paradox.
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I LOVE the disclaimer. Thank you for being transparent and responsible when giving us non peer reviewed information. You rock Dr. B
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Hey, It's Laura. It was so amazing getting to meet you. I really want to be a teacher, and I wanted to say you're going to be a massive inspiration teaching me all about expansive galaxies above. 😊
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Your caveats and comments about peer review and paper status during the intro was amazing. It is how all reporting like this should be done, but in this age of hype you are a welcome exception. THANK YOU!
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From watching the first Mercury launches on a black and white tv to seeing new JWST images and data is just incredible. Looking forward to new discoveries, especially those that blow the doors off of our current theories. Thanks Dr. Becky!
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As weird as that will sound, this is the best explanation of how all this was calculated all along. I mean, not like I was explicitly looking for a better explanation, but I never stumbled across one so clear. Thank you!
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JWST is expanding our knowledge and already proving itself, much like Hubble did when it finally got it's spectacles. Hubble showed the way, JWST is taking the ball and running with it. It's a phenomenal bit of engineering and it will inspire another generation to design better instruments to answer the questions JWST now has us asking. You will have to come back to this after peer review, doesn't matter if this is right or wrong, just take another look in a years time.
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I just want to say, I love how Dr Becky always goes over the background information that's been covered in other videos before getting to the main topic. Instead of assuming that anyone watching already knows these things. As someone who has a lot of trouble with memory and understanding, it's insanely helpful and valuable. It was even more valuable the first time I watched one of her videos as someone who had little to no knowledge of the topic she was discussing. Also I consider the dot points for what's going to be covered as a key feature of these videos and immensely valuable. Value, value everywhere... Please keep it up <3
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What I admire about science is that it is an applied methodology, based on what do we know, how do we know it and how certain are we about it? Being able to self-question and refine theory based on evolving data is great!
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I find this pretty interesting. Its the astronomy analogue of debugging code or trying to design a dataset after a garbage-in-garbage-out problem. Cosmological bug hunting.
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Love the enthusiasm for the subject as well as the clarity of explanations.
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Thanks for the clarification information on the conference. Love your insight ❤
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For some context before tonight's premiere this was me last Friday when I thought we might have some evidence for new physics: youtube.com/shorts/u0aU14mFsx8?si=zY-eNOanHrGTmp2N And this was me on Monday reacting to the fact that the actual news is a claim for a solution to the Hubble tension, aka the "crisis in cosmology": youtube.com/shorts/e29x3WsQPJg?si=5uz4OTYVkLjEQ_k_
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Thank you for helping me appreciate how small we are and how very little time we have here. It helps me feel grateful for every breath I take. Thank you for the clear and thorough explanations with scientific transparency!
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Dr. B. is so fricking good at explaining stuff. I wish that she had been given the job of writing the assembly instructions for the CNC machine I'm trying to put together right now.
