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Tulip Nebula, at least in the field seen from earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. It is also called Sharpless 101 (Sh2-101) or the Cygnus Star Cloud because the nebula located in the constellation Cygnus.

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Cygnus X-1 is a black hole about 15 times the mass of the Sun in orbit with a massive blue companion star. Astronomers used several telescopes including Chandra to study Cygnus X-1. The combined data have revealed the spin, mass, and distance of this black hole more precisely than ever before. Stephen Hawking lost a bet - originally placed in 1974 -- that Cygnus X-1 did not contain a black hole.

Black Hole. Interesting read here Artist's conception of Cygnus X-1 system. (Credit: Chandra/NASA);

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AGUJERO NEGRO (CYGNUS X-1) Björn Dahlem Desde el 19 de septiembre 2014 al 11 de enero 2015

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Picture of the Day: The Star-Forming Region of Cygnus X

Cygnus x-1 est une étoile binaire (à neutrons OU un trou noir car elle émet des rayons X mais est toujours sujette à controverse). Malgré une distance évaluée entre 4500 et 6000 années lumières, elle est visible avec des jumelles par beau temps car elle ferait 20 à 30 fois la masse solaire.

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Birth of famous black hole: Longstanding mysteries about object called Cygnus X-1 unraveled

Birth of famous black hole: Longstanding mysteries about object called Cygnus X-1 unraveled -- ScienceDaily