Dark Matter Might Be Black Holes From a Pre-Big-Bang Cosmos
A new cosmological model argues dark matter could be a population of pre-existing black holes that survived a prior universe’s collapse and rebound in a cyclic cosmos. If cosmic bounces allow relic structures to endure, the current universe could be born with these black holes rather than needing exotic particles, potentially solving both the dark-matter question and black-hole origins—but the idea must be tested against data from gravitational waves, galaxy surveys, and the cosmic microwave background.
