S8 Ep692: 8. Headline: Speculative Theories and the Dark Crisis Guest Author: Govert Schilling Summary: The discovery of galaxies lacking dark matter challenges both standard models and MOND. Speculative theories now explore primordial black holes, fuzzy dark ma

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John Batchelor

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🗓️ 4 April 2026

⏱️ 10 minutes

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Summary

8. Headline: Speculative Theories and the Dark Crisis Guest Author:Govert Schilling Summary: The discovery of galaxies lacking dark matter challenges both standard models and MOND. Speculative theories now explore primordial black holes, fuzzy dark matter, and Erik Verlinde’s idea of emergent gravity. Some fresh thinking even suggests that Modified Newtonian Dynamics and the standard cold dark matter model might eventually work in concert. (8)
SEPTEMBER 1932

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0:00.0	Call my wife.
0:01.5	Calling UK Wildlife.
0:03.6	Voice assistance not working for you.
0:05.7	BlackRock Investment Trust has a lot working for you.
0:08.2	Get to know them at blackrock.com.
0:10.0	Capital at risk marketing material.
0:11.4	BlackRock Investment Management UK Limited,
0:13.0	authorised and regulated by the Financial Conduct Authority.
0:19.7	I'm John Batchel with Govert Schillig.
0:21.5	His wonderful new book, The Elephant in the Universe, is the frontier of thinking about dark matter,
0:27.7	dark energy, and our universe.
0:29.8	100-year search.
0:31.3	Right now, however, the searching the heavens are searching particle physics.
0:35.6	They're in minds waiting for collisions.
0:37.9	And we come to, uh-oh, an exception.
0:41.5	They found a galaxy without cold, dark matter.
0:45.1	They found several of them, in fact.
0:47.3	And that worries everybody.
0:49.3	Or the quote, D.F.44, that's the name of the galaxy.
0:53.7	They call it the dragonfly galaxy,
0:55.3	is a problem for everybody. Is it a problem for Mun too?
0:59.3	It is a problem for Monce too, because Mont is this alternative theory that tries to explain
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