rgrenaderphoto wrote:
Tulip Nebula Sh2-101 5871 L.Y. in the constellation Cygnus. A very active Hydrogen Alpha region of the Milky Way.
If you look to the nebula's right, you'll see a faint arc curving away from the Tulip nebula directly in line with my watermark. That, I am told, is the shock wave from Cygnus X-1, the first supermassive black hole ever discovered.