Cygnus

American  

[sig-nuhs] / ˈsɪg nəs /

noun

Astronomy.

• Cygni
  genitive

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

See Examples For:

Cygnus Cygni

It is believed they hopped into a container in Dundee, which was taken by road to Aberdeen, before travelling on the offshore ship Aquarius to Ithaca Energy's Cygnus field.

From BBC ● Apr. 22, 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

Centrica will sell various interests to Serica Energy for 98 million pounds, including a 15% stake in the Cygnus gas field.

From The Wall Street Journal ● Dec. 16, 2025

Krawczynski noted that the 2024 flight set multiple technical milestones, including detailed measurements of both Cygnus X-1 and the Crab pulsar.

From Science Daily ● Nov. 23, 2025

In 1971, Uhuru discovered a remarkably bright X-ray source in the constellation of Cygnus, the Swan, flickering on and off a thousand times a second.

From "Cosmos" by Carl Sagan

For the three stars with detected astrospheres, named 70 Ophiuchi, epsilon Eridani, and 61 Cygni, the researchers estimated their mass loss rates to be 66.5±11.1, 15.6±4.4, and 9.6±4.1 times the solar mass loss rate, respectively.

From Science Daily ● Apr. 12, 2024

I, the undersigned, being of sound mind and body, knowingly embark on a one-way journey to the second moon of 16 Cygni Bb.

From Nature ● Feb. 14, 2017

This image compares the size of the Sun to that of Delta Boötis, a giant star, and Xi Cygni, a supergiant.

From Textbooks ● Oct. 13, 2016

But the supposed companions to 61 Cygni and Lalande 21185 were so massive that they strained the definition of a planet.

From Scientific American ● May 30, 2013

The next step carries us to a very famous object, 61 Cygni, long known as the nearest star in the northern hemisphere of the heavens.

From Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers by Garrett Putman Serviss