Constellations & Asterisms
A constellation is an area in the sky containing a group of stars that looks like a particular shape. Throughout history, constellations served to navigate the sky, and until now astronomers use their names to point out the sky objects’ locations. The International Astronomical Union formally acknowledges 88 constellations. Some smaller groups of stars are called asterisms – they also have particular shapes, but are composed of stars that are already part of a bigger constellation. The most famous asterism is the Big Dipper, a part of the constellation Ursa Major. Here, we provide detailed articles, colorful infographics, and interesting quizzes on constellations and asterisms. Learn to navigate the sky with us!
Northern Hemisphere Constellations by Season: What Constellations Are Visible in Spring, Summer, Fall, and Winter
Explore Northern Hemisphere constellations by season. Discover which constellations are visible in spring, summer, fall, and winter, plus the best stars and deep-sky objects to observe.
April 2026 Constellations: 8 Star Patterns to Find in the Night Sky
What constellations can you see in April? Explore eight April constellations, their brightest stars, and get a helpful night sky map for easy stargazing.
Southern Hemisphere Constellations by Season: Best Southern Sky Constellations
Discover the best Southern Hemisphere constellations by season and learn when and where to spot them in the southern sky.
Spring Triangle: How to Find This Bright Spring Asterism
Learn how to spot the Spring Triangle in the night sky and explore the deep-sky objects it hosts. Perfect for stargazing in March–April!
Monoceros Constellation: Stars and Facts & How to Find the Unicorn
Find the constellation Monoceros in the Winter Triangle near Orion & Sirius — the best time is late winter. See its best deep-sky targets, like the Rosette Nebula, M50, and NGC 2264.
Constellation Centaurus: Stars, Location & How to Find It
Centaurus is a standout constellation of the southern sky. Find it with this simple guide, spot its brightest stars Alpha and Beta Centauri, and discover other highlights of the constellation.
Orion: the Hunter Constellation
From the iconic Orion Belt, which helps you locate other objects in the sky, to the Orion Nebula – let’s explore the constellation Orion, a longtime favorite of astronomers around the world.
February Constellations and Their Brightest Stars
Discover 8 constellations of February’s sky, including Canis Major and Gemini. Learn simple ways to spot them in this guide.
Cosmic Horses: Where Horses Show Up in the Night Sky
Gallop through the night sky: from Pegasus and its “pony” neighbor Equuleus to the Horsehead Nebula and other horse-shaped space objects. Your cosmic horse-hunt starts here!
Constellations Visible in March (Northern & Southern Hemisphere)
See which constellations are visible in March in the Northern and Southern hemispheres. Learn when and where to spot them, plus get a handy star map for your location.