... Cosmic Crab Nebula . ... The Crab Pulsar, a city-sized, magnetized neutron star spinning 30 times a second, lies at the center of this tantalizing wide-field image of the Crab Nebula. A spectacular picture of one of our Milky Way's supernova remnants, it combines optical survey data with X-ray data from the orbiting Chandra Observatory. ... The effect is created not by digital trickery but by large amounts of interstellar dust. ... Cave with Aurora Skylight . ... A Solar Filament Erupts . ...