physical cosmology

  • Black Holes Could Be Expanding Along With the Universe

    Black Holes Could Be Expanding Along With the Universe

    In 2015, two black holes were caught merging when the ripples in spacetime they created were detected on Earth. Since then, gravitational wave detectors have found many more of these mergers, broadening our understanding of the most epic collisions known to science. Now, a team of astrophysicists examining data from these detections are proposing that…


  • A Vanished Supernova Will Reappear in 16 Years

    A Vanished Supernova Will Reappear in 16 Years

    Ten billion years ago, well before the formation of our solar system, a gargantuan explosion threw out vast amounts of highly energetic light. A star died in a dazzling supernova, and, though it happened so long ago, the flash was only seen in 2016 and vanished shortly thereafter. But if you missed it then, worry…