Cygni is a term often associated with the constellation Cygnus, which is known for its distinctive shape resembling a swan. Located in the northern sky, Cygnus is prominent during summer evenings and contains several notable stars, including Deneb, one of the brightest stars in the night sky. In astronomy, Cygni can also refer to specific stars within the Cygnus constellation, such as Alpha Cygni, which is another name for Deneb. This constellation is rich in celestial objects, making it a popular area for stargazers and astronomers alike.