Scientists may have found an answer to the mystery of dark matter. It involves an unexpected by-product

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. For about fifty years, the scientific community has been grappling with a substantial problem: there isn’t enough visible matter in the universe. All the matter we can see — stars, planets, cosmic dust and everything … Read more

How primordial black holes could explain the enduring mystery of dark matter

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. For about fifty years, the scientific community has been grappling with a substantial problem: there isn’t enough visible matter in the universe. All the matter we can see — stars, planets, cosmic dust and everything … Read more

‘Supercharged rhino’ black holes may have formed and died a second after the Big Bang

Small, primordial black holes that formed in the first fraction of a second after the Big Bang may have had company, in the form of even smaller supercharged black holes with the mass of a rhinoceros that quickly evaporated. A team of researchers has theorized that these tiny rhino black holes, which would represent an … Read more