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JWST just made the "Crisis in Cosmology" WORSE

Dr. Becky · 1.3M views · 2022-12-08 · 16:36

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Overview

Astrophysicist Dr. Becky explains the Hubble tension, the disagreement between expansion-rate measurements from the cosmic microwave background and the distance ladder, and what early JWST Cepheid observations add.

On Hacker News

Recommended as an accessible layperson introduction to the Hubble tension when new expansion-rate results make the news.

Recommended by 2 HN people across 1 months · HN mentions 2022–2024

Topics

Cosmology & astrophysicsSpace exploration & spaceflight
Search by tags
hubble tensionjwstdistance laddercepheidsexpansion of the universe

What people said

harywilke · 2024-03 · Recommendation

Dr.Becky goes over this in a video [0] from a year ago about the divergent results obtained by the two main ways we measure the rate of expansion. Cosmic Microwave Background Vs. Supernovae. As the accuracy of each method has improved, the end results have diverged. [0] 'theJWST just made the "Crisis in Cosmology" WORSE' [VIDEO]

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jug · 2024-03 · Recommendation

I can recommend Dr. Becky's introduction to the issues surrounding the Hubble Tension and recent JWST measurements in this 16 minute clip, as she introduces laymen to the problems well: [VIDEO] It's an older clip, but it checks out... ;) (still JWST discoveries and she most importantly introduces the viewer to the still remaining conflicts)

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SkyMarshal · 2023-01 · Reference

Considering the two methods for measuring the rate of the universe’s expansion differ by about 10%, the question seems unsettled at best. You’re not wrong to question it. [VIDEO]

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Sources

Video by Dr. Becky, played through YouTube.

Data and selection notes

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