Since ancient times people have tried to explain the night sky. A constellation is a group of stars. The groups are identified according to patterns that people have seen in the stars and they are simply ways that people have imagined the stars. Over thousands of years different cultures have seen different patterns in the stars. They have named many different constellations after familiar animals, everyday objects, and characters and beasts from stories.
Today constellations provide a connection between modern humans and ancient stories. Astronomers have named 88 constellations and they use them to help describe the location of specific stars.
There are 12 well-known constellations that lie in a band of space called the zodiac: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricornus, Aquarius, and Pisces. Today astronomers have calculated that during the period from November 27 to December 17, there is one more zodiacal constellation on the horizon – Ophiuchus.