KnowraPrimordial black holeLinked fromLinked fromThe 12 pages that link to Primordial black hole, each with the reason it gives.All 12Related 4Narrower topic 1Compared with 7Dark matterCompared with: It could behave as dark matter gravitationally, but observations constrain its possible abundance.Supermassive black holeCompared with: Such objects could have supplied initial seeds, but their role in supermassive black-hole formation is unconfirmed.AxionCompared with: It is a distinct dark-matter candidate, with no axion particle required.Intermediate-mass black holeCompared with: Its proposed early-universe origin differs from the usual stellar or cluster routes.Stellar black holeCompared with: Unlike a stellar black hole, it would originate before stars existed.Astronomical black holesCompared with: Unlike stellar remnants, primordial black holes could have formed before stars existed.Planets beyond NeptuneCompared with: It has been proposed as an alternative compact object in the distant Solar System, rather than a planet.