Clusters, Nebulae, Galaxies
Deep-sky objects (DSO) are celestial objects that lie outside the Solar System. They comprise galaxies, planetary nebulae, and star clusters. Deep-sky objects appear as fuzzy spots to the naked eye and start to take shape when looked at through binoculars or a telescope. Here, you’ll learn when and how to observe the most famous DSOs.
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The Pleiades: One of the Best Naked-Eye Deep-Sky Objects
How many stars can be observed in the Pleiades star cluster? 💫 Most stargazers only see six – learn how to spot more!
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Best Deep-Sky Objects by Month: February 2025
Learn about galaxies, nebulae, and star clusters that you can see in February 2025. Many of the objects in our list can be observed through binoculars.
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Top 10 Deep-Sky Objects of January 2025
Learn about 9 bright star clusters and 1 spiral galaxy that you can see in the sky in January.
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Magic of the Christmas Night Sky: Planets, Asterisms, and More!
Discover what celestial wonders await you in the Christmas sky this year! From bright planets to unique asterisms, learn how to spot them all.
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The Beehive Cluster (Messier 44): 1000 Stars in Cancer’s Heart
The Beehive Cluster is one of the appealing deep-sky objects for both amateur and professional astronomers. You can find it in the sky, too! Discover when and where to see the cluster and what makes it special.
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Top 10 Deep-Sky Objects of December 2024
Discover the Andromeda Galaxy, Orion Nebula, Double Cluster in Perseus, and other bright deep-sky objects you can see in December.
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Top 13 Deep-Sky Objects of November 2024
Want to see a distant galaxy or nebula with your own eyes? Learn about the best deep-sky objects you can observe in November.
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Stargazing Under the Halloween Night Sky: Uncover Spooky Celestial Wonders
Embrace the spirit of Halloween by exploring the spooky wonders of the cosmos, from demon stars to ghostly nebulae. Get all the cosmic treats this Halloween!
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Top 15 Deep-Sky Objects of October 2024
See the famous Andromeda Galaxy and many other deep-sky objects this October. Many of them are visible to the naked eye!
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Top 12 Deep-Sky Objects of September 2024
Explore the September sky with our guide to the brightest nebulae, star clusters, and galaxies. Get your binoculars and telescopes ready!