Astronomers map glowing filaments from historic supernova first seen in 1181

Astronomers have mapped glowing filaments from a supernova first observed in 1181, using the Keck Cosmic Web Imager in Hawaii. This is the first time these structures have been seen in 3D, revealing their movement away from the explosion site. The supernova, known as SN 1181, resulted from a partial explosion of a white dwarf star. Researchers discovered the filaments, which resemble a dandelion, are expanding at 2.2 million miles per hour, providing new insights into the supernova's remnants. Previous studies identified a nebula linked to SN 1181, named Pa 30. The new findings suggest the filaments may form from shock waves or dust clumps, but further research is needed to understand their origins and the structure of the supernova remnant.