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The Crisis in Cosmology

PBS Space Time · explainer · Watch on YouTube

Cosmology & astrophysics

What it is

PBS Space Time explains the Hubble constant tension, in which two precise, independent methods of measuring the universe's expansion rate disagree. It covers why this calls some standard cosmology into question.

Why Hacker News recommends it

Recommended as a clear, layman-friendly explanation of the Hubble tension from a channel regarded well by physicists.

  • 3 people recommended it
  • 3 different months
  • 1 strong recommendations
  • first 2019, last 2021

What HN commenters said

  1. “PBS Space time has an excellent video on the topic”

    Explains the two conflicting Hubble constant estimates

    dron57, 2021-05 · Strong recommendation · in “A new replication crisis: Research that is less likely to be true is cited more”

  2. “I recommend their channel generally if these topics interest you.”

    Clear PBS Space Time explanation of inflation and cosmic structure

    madaxe_again, 2019-10 · Recommendation · in “How Can a Star Be Older Than the Universe?”

  3. “I believe at least PBS Space-Time [1] is well regarded in physics circles”

    Layman-friendly explanation of the crisis in cosmology

    doublepg23, 2021-10 · Recommendation · in “We've spotted a planet surviving its dying star”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: cosmology, hubble constant, universe expansion, astrophysics, pbs space time

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