While the night sky appears as a random array of stars, astronomers have catalogued 88 official constellations—groups of stars that can be mapped and named. Most of the most common constellations are visible to the naked eye.
By Stephanie Rutherford-Scott, Updated Mar 24, 2022
Ursa Major, the Great Bear, is the most iconic constellation. Its standout feature is the Big Dipper—a ladle-shaped asterism that occupies roughly half of the constellation. With its bright stars and unmistakable shape, it’s one of the easiest patterns to locate in the night sky.
Known as the Small Bear, Ursa Minor sits near Ursa Major in the Northern Hemisphere. It’s recognized by the Little Dipper, a smaller version of the Big Dipper, and by Polaris, the North Star, which marks the end of the Little Dipper’s handle. Polaris remains the most reliable celestial reference point for navigation.
Orion, the Great Hunter, dominates the celestial equator and is visible from almost every location on Earth. The three bright stars—Mintaka, Alnilam, and Alnitak—form Orion’s famous belt. Ancient Greek astronomers associated the constellation with a hunter destined to challenge Taurus the Bull.
Cassiopeia, positioned in the upper Northern Hemisphere, was one of the earliest constellations charted by Greek astronomers in the second century. Its distinctive W shape is composed of five luminous stars, making it easy to spot. The myth behind the name references the Ethiopian queen Cassiopea, renowned for her beauty and vanity.
