The foolish optimism of thinking dark matter is about to be detected
Ethan Siegel

Years ago, when parallel-brane theories were in vogue, it was speculated that Dark Matter might actually be matter sequestered on nearby branes, that exist in a higher dimensional bulk space. That speculation was apparently ruled out, as I recall, but I can’t remember the reasons for the exclusion of this hypothesis. Perhaps Ethan could look into this. It would make an interesting topic for a future post.

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