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by kl4m 1839 days ago
Here's an expanded explanation of the "lots of black holes" hypothesis, posted this week by PBS Space Time.

"What If (Tiny) Black Holes Are Everywhere?" https://www.youtube.com/watch?v=srVKjWn26AQ

Dark Matter is just a placeholder name, don't read too much into the "Matter" part. There are no assumptions there and plenty of alternate explanations are proposed, like Modified Gravity (MOND)