Cygnus (constellation)

Cygnus is a constellation in the northern sky. Cygnus means "swan" in Greek.  There is a pattern of stars in Cygnus that is called the Northern Cross.  This is because the pattern of stars looks like a cross.  The constellation Crux (constellation) has a pattern of stars that is called the Southern Cross.  The astronomer Ptolemy listed Cygnus in the 2nd century when he made a list of constellations.

Deep-sky objects
North America nebula
Pelican nebula

Famous stars
 Deneb
 Albireo
 Chi Cygni
 KY Cygni

References

Category:Constellations
Category:Constellations listed by Ptolemy