‘Cosmic Dandelion’: A Mysterious 900-Year-Old Nebula Gets Mapped in Stunning Detail
The supernova that caused the nebula was recorded by Japanese and Chinese astronomers in the 12th century. Now, we know exactly what the aftermath looks like.
The supernova that caused the nebula was recorded by Japanese and Chinese astronomers in the 12th century. Now, we know exactly what the aftermath looks like.