Here's what that means:

* Constellations: Imagine the night sky as a giant map. Constellations are groups of stars that appear to form patterns or shapes when viewed from Earth. They are like "landmarks" in the sky.

* Cygnus: Cygnus is a constellation in the Northern Hemisphere that is shaped like a cross or a swan. It's visible from most locations in the Northern Hemisphere during the summer months.

* Location within Cygnus: Stars are not physically close to each other in space, even though they appear clustered in constellations. However, astronomers assign a specific location within a constellation to each star. So, saying a star is in Cygnus means it's one of the stars that makes up the overall shape of the constellation.

Example:

* Deneb, a very bright star, is located in the constellation Cygnus. It forms the tail of the swan.

By knowing a star's location in a constellation, astronomers can easily identify and study it.