By comparing new Hubble observations with images first taken in 1999, astronomers traced the continuing expansion of one of the sky’s most studied supernova remnants, energized by a rapidly spinning pulsar at its core. This image, captured with the NASA/ESA Hubble Space Telescope in 2024, shows the Crab Nebula. Image credit: NASA / ESA / STScI / William Blair, JHU / Joseph DePasquale, STScI. In 1054, Chinese astronomers were startled by the appearance...
