A supernova blazed across the night sky 1,000 years ago. Now astronomers have found the remaining ‘zombie star’
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. In 1181, a dying star left a trail in the night sky for six months. The striking object appeared as bright as Saturn near the constellation Cassiopeia, and historical chronicles from China and Japan recorded … Read more