“The Weird Existence of Primordial Black Holes in the Early Universe” –Harvard-Smithsonian Center for Astrophysics

  Astronomers studying the motions of galaxies and the character of the cosmic microwave background radiation came to realize in the last century that most of the matter in the universe was not visible. About 84 percent of the matter in the cosmos is dark matter, much of it located in halos around galaxies. It … Continue reading “The Weird Existence of Primordial Black Holes in the Early Universe” –Harvard-Smithsonian Center for Astrophysics