Astronomers Unveil 3D Map of Supernova Remnant’s Dazzling Filaments, Revealing Insights into Ancient Cosmic Explosion
Mauna Kea, Hawaii — In a groundbreaking discovery, astronomers using the Keck Cosmic Web Imager at the W. M. Keck Observatory have unlocked new insights into a celestial event that puzzled observers nearly a millennium ago. The event, a supernova witnessed in 1181 and long known as SN 1181, was recorded by Chinese and Japanese astronomers of the era as a dazzling “guest star” that briefly outshone other celestial bodies in the constellation Cassiopeia. The …