• Ruins of the early universe

    Ruins of the early universe
    After nearly three years of constantly monitoring an extremely bright object less than 300 million light-years from Earth, astronomers have just announced the latest discovery
  • Black holes are only big or small

    Black holes are only big or small
    Sometimes a black hole is like a giant cosmic beast that has billions of times the mass of the sun. But is there a medium-sized black hole?