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Tonight Brightest Stars Astronomy Essentials Moon Phases Clusters Nebulae Galaxies Favorite Star Patterns Constellations
Astronomy Essentials
Rare Black Moon coming August 22-23! Why so special?
Deborah Byrd
August 19, 2025
Astronomy Essentials
Tonight
Visible planets and night sky guide for August
Marcy Curran
August 19, 2025
Astronomy Essentials
Look for Mercury farthest from the morning sun August 19
Editors of EarthSky
August 17, 2025
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Tonight

Rare Black Moon coming August 22-23! Why so special?

We'll have a Black Moon on August 22-23, 2025. A Black Moon is a special kind of new moon. Learn more about Black Moons here.
Deborah Byrd
August 19, 2025
Visible planets and night sky guide for August
August 19, 2025
Meteor shower guide 2025: Next up is the Perseids
August 1, 2025
The Great Rift is a dark swath in the Milky Way
August 20, 2025
Capricornus the Sea-goat has an arrowhead shape
August 20, 2025
The return of Sirius in the morning signals seasonal change
August 21, 2025
Zodiacal light: Start watching for it now
August 22, 2025

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Astronomy Essentials

View All
Rare Black Moon coming August 22-23! Why so special?
Deborah Byrd
August 19, 2025
Visible planets and night sky guide for August
Marcy Curran
August 19, 2025
Look for Mercury farthest from the morning sun August 19
Editors of EarthSky
August 17, 2025
Perseid meteor shower 2025: All you need to know
Bruce McClure
August 10, 2025

Brightest Stars

View All
Thuban was the North Star for the ancient Egyptians
Bruce McClure
August 12, 2025
61 Cygni – a double star – is nicknamed Flying Star
Larry Sessions
August 7, 2025
Eltanin and Rastaban, the Dragon’s eyes
Bruce McClure
July 29, 2025
Summer Triangle star: Altair is variable and spins fast!
Larry Sessions
July 23, 2025

Constellations

View All
Delphinus the Dolphin has a graceful kite shape
Kelly Kizer Whitt
August 15, 2025
Is Ophiuchus the 13th constellation of the zodiac?
Bruce McClure
August 10, 2025
Sagittarius the Archer and its famous Teapot
Bruce McClure
July 31, 2025
Corona Borealis, the Northern Crown is overhead now
Deborah Byrd
July 29, 2025

Clusters Nebulae Galaxies

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The Omega nebula is a star-forming region
Bruce McClure
July 10, 2025
Rho Ophiuchi is filled with glorious color
Kelly Kizer Whitt
June 28, 2025
M5, your new favorite globular star cluster
Bruce McClure
June 6, 2025
The awesome beauty of the Eagle nebula
Martin MacPhee
May 15, 2025

Favorite Star Patterns

View All
Teapot of Sagittarius points to Milky Way center
Bruce McClure
August 5, 2025
The Northern Cross: Find the backbone of the Milky Way
Bruce McClure
July 9, 2025
Summer Triangle: Star pattern of the season
Deborah Byrd
June 24, 2025
The Big and Little Dipper: How to find them in the spring
Bruce McClure
March 30, 2025
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