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Black Hole Star – The Star That Shouldn't Exist

Kurzgesagt – In a Nutshell · explainer · Watch on YouTube

Cosmology & astrophysics

What it is

Kurzgesagt explains black hole stars, a hypothesized kind of giant star with a black hole at its core that could be a route to early supermassive black holes.

Why Hacker News recommends it

HN uses it as a quick, accessible introduction to the black hole star concept in threads about early-universe black holes.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2022, last 2025

What HN commenters said

  1. “Here is a nice video by Kurzgesagt on this topic.”

    Explains quasi stars as a theory for supermassive black hole origins.

    rishav_sharan, 2023-11 · Recommendation · in “UHZ1: NASA Telescopes Discover Record-Breaking Black Hole”

  2. “Just in case you somehow don’t know what a Black Hole Star is, check out Kurzgesagt’s video about them”

    Introduces what a black hole star is.

    db48x, 2025-07 · Recommendation · in “Early universe's 'little red dots' may be black hole stars”

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

Topics: kurzgesagt, black holes, astrophysics, early universe, quasi stars

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