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Albireo, in the constellation Cygnus, is a favorite for stargazers. Through a small telescope, it appears as a stunning gold star with a dimmer blue companion.
Learn more about the double star orbits of 2 famous stars - Sirius and Albireo - with these fascinating charts from Guy Ottewell.
With the eye alone, Almach looks like a single star. Through a telescope, it looks like a colorful duo. But Almach is really 4 stars.
This observing guide gives you a range of choices for seeing double stars with your eyes alone, with binoculars or with a telescope.
When you gaze at the bright star Deneb, you’re gazing across thousands of light-years of space at one of the bright stars of the huge Summer Triangle asterism.
The Northern Cross is an asterism - or recognizable pattern of stars - within the constellation Cygnus the Swan. Learn how to find it in your sky here.
The Coathanger cluster resembles its namesake and is easy to spot through binoculars. Use the star Albireo - part of the Summer Triangle - to find it.
Cygnus the Swan is a constellation that lies atop the Milky Way. Its brightest star, Deneb, is part of the Summer Triangle.
Guy Ottewell answers the question: Since the Northern Cross is vertical as it sets in the west, why is it not also vertical as it rises in the east?
Members of the EarthSky community shared these amazing photos of July's deep sky. See nebulae from Cygnus, galaxies and more!
Lyra the Harp is a constellation that hosts the second brightest star in the northern sky, Vega. Look for it on summer nights.
Vulpecula the Fox is a small constellation inside the Summer Triangle. Amateur astronomers go here to spot the Coathanger Cluster and the Dumbbell Nebula.
It isn't as famous as its counterpart, the Southern Cross. But the Northern Cross looks like a cross, and it's pretty easy to spot. You'll find it upright in the west on late December evenings.
You can use the Summer Triangle - and the constellation Cygnus the Swan - to locate the edgewise disk of our Milky Way galaxy.
The Summer Triangle consists of 3 bright stars - Vega, Deneb and Altair - in 3 different constellations. Deneb also represents the tail of Cygnus the Swan.
Deneb marks the Tail of Cynus the Swan. At the same time, it marks the head of a crosslike pattern - an asterism - known as the Northern Cross.
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