Cygnus

American  

[sig-nuhs] / ˈsɪg nəs /

noun

Astronomy.

1. the Swan, a northern constellation southwest of Draco, containing the bright star Deneb.

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Cygnus British  

/ ˈsɪɡnəs /

noun

1. a constellation in the N hemisphere lying between Pegasus and Draco in the Milky Way. The constellation contains the Cygnus Loop supernova remnant, the intense radio galaxy Cygnus A, and the intense galactic X-ray source Cygnus X–1, which is probably a black hole

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Cygnus Scientific  

/ sĭg′nəs /

1. A constellation in the Northern Hemisphere near Cepheus and Lyra. Cygnus (the Swan, or the Northern Cross) contains the bright star Deneb.

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Etymology

Origin of Cygnus

< Latin: swan; see cygnet

Example Sentences

Its corners are marked by Vega in the constellation of Lyra, the Harp, Altair in Aquila, the Eagle and Deneb in Cygnus, the Swan.

From BBC • Jun. 6, 2026

The study, published in Nature Astronomy, focused on Cygnus X-1, a well-known system that includes the first confirmed black hole and a massive supergiant star.

From Science Daily • Apr. 18, 2026

Back at Cygnus school, Karel says he would be "a little devastated" if a social media ban was enforced.

From BBC • Mar. 25, 2026

The team directed a balloon-borne telescope known as XL-Calibur toward Cygnus X-1, a well-studied black hole located roughly 7,000 light-years away.

From Science Daily • Nov. 23, 2025

In the case of Cygnus X-l, this is about six times the mass of the sun, which, according to Chandrasekhar’s result, is too great for the unseen object to be a white dwarf.

From "A Brief History of Time: And Other Essays" by Stephen Hawking