A cloud of heated ionised gas & dust in the constellation of Cygnus. A supernova remnant 1470 light years from Earth. The source supernova was a star 20 times more massive than our Sun which exploded around 10,000 years ago. At the time of the explosion the supernova would have been brighter than Venus in the sky and visible in the daytime. This image focusses on the lower part of the Eastern Veil. The blue colour denotes ionised Oxygen and red ionised Hydrogen Alpha. In the warm Summer months Cygnus flies directly above our heads. To think our ancestors 10,000 years ago could have seen this supernova in the sky. Now the Bat resides above us!