“Supernova Swept Over Earth” –Killing Off Large Ocean Animals at Dawn of Pleistocene

  “We have the Local Bubble in the interstellar medium. We’re right on its edge,” says Adrian Melott at the University of Kansas. “It’s a giant region about 300 light years long. It’s basically very hot, very low-density gas — nearly all the gas clouds have been swept out of it. The best way to … Continue reading “Supernova Swept Over Earth” –Killing Off Large Ocean Animals at Dawn of Pleistocene