starstuffblog:gamma—crucis:The Veil Nebula is a cloud of heated ionized gas and dust in the constell
starstuffblog:gamma—crucis:The Veil Nebula is a cloud of heated ionized gas and dust in the constellation Cygnus, and makes up the visible portion of the Cygnus Loop, a large but faint supernova remnant, which exploded 5,000-8,000 years ago. Image Credit: NASA, ESA, ESO -- source link