Little red dots are my favorite new concept in astrophysics. This idea that there could be so much matter orbiting a black hole that the matter reaches sun levels of pressure which in turn starts steller fission without there being an star. Mind-blowing
Will all matter in the universe just collapse into black-holes eventually ? It feels that way. And will all the black-holes then merge to form the Primordial Black Hole which will then explode to form a new universe ?
All of the evidence currently points the universe expanding and bringing everything further apart. There is no evidence of a cycle. However, some people are starting to believe the expansion is slowing.