Sh2-103 | The Cygnus Loop
The Cygnus Loop is a large supernova remnant in the constellation Cygnus, an emission nebula measuring nearly 3° across. Some arcs of the loop, known collectively as the Veil Nebula or Cirrus Nebula, emit in the visible electromagnetic range, whilst other parts in the radio, infrared, and X-ray range
July 14, 2021
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