Cygnus X-1 was the first compelling black hole candidate to emerge in the early 1970s.
From the sciencedaily.com
Cygnus X-1 is one of the most studied objects in the night sky, as you might imagine.
From the forbes.com
Cygnus X-l shows a sharp decrease in X-ray emissions every 5.6 days.
From the time.com
Cygnus X-3, a pair of objects that sit some 30,000 light years from Earth, has long been a puzzle.
From the newscientist.com
Cygnus X is home to thousands of young, restless O-type stars.
From the newscientist.com
Cygnus X was named by radio astronomers, since it is one of the brightest radio regions in the Milky Way.
From the sciencedaily.com
Cygnus X-1 is a so-called stellar-mass black hole, a class of black holes that comes from the collapse of a massive star.
From the forbes.com
Cygnus X hosts many young stellar groupings, including the OB2 and OB9 associations and the cluster NGC 6910.
From the sciencedaily.com
Cygnus is depicted flying to the SW, its wings outstretched from Sadr, and its neck reaching to a beak at Albireo.
From the guardian.co.uk
More examples
A constellation in the northern hemisphere between Pegasus and Draco in the Milky Way; contains a black hole
A genus of Anatidae
Cygnus is a northern constellation. Its name is the Latinized Hellenic (Greek) word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). ...
In Greek mythology, four people were known as Cycnus or Cygnus. Most of them ended up being transformed into swans. The most famous Cycnus however, was the son of Ares.
Swans, genus Cygnus, are birds of the family Anatidae, which also includes geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae. ...