Dandelion Supernova Revealed in 3-D
Center for Astrophysics | Harvard and SmithsonianFor nearly six months, during the year 1181, people looked up to the skies to find a new star glittering in the constellation Cassiopeia. Chinese and Japanese astronomers recorded the rare event, an explosion of a star, or supernova. Now, astronomers have mapped the location and speed of those unusual filaments in three dimensions for the first time.