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Tonight Brightest Stars Astronomy Essentials Moon Phases Clusters Nebulae Galaxies Favorite Star Patterns Constellations
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A planetary alignment on January 25, 2025?
Kelly Kizer Whitt
January 24, 2025
Astronomy Essentials
What is the zodiac? Why is it important in astronomy?
Christopher Crockett
January 24, 2025
Clusters Nebulae Galaxies
Meet the Crab Nebula, remnant of an exploding star
Larry Sessions
January 24, 2025
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Tonight

A planetary alignment on January 25, 2025?

You've heard the internet rumor of a great planetary alignment on January 25, 2025. So what's true and what isn't? The answers are here.
Kelly Kizer Whitt
Deborah Byrd
January 24, 2025
Visible planets and night sky guide for January
January 24, 2025
Meteor shower guide 2025: Next up is the April Lyrids
January 5, 2025
How far is Betelgeuse, the famous red supergiant star?
January 26, 2025
Sirius is a future southern Pole Star
January 28, 2025
See the zodiacal light in dark skies around the equinox
February 14, 2025
What’s a supermoon? Supermoons in 2025
February 28, 2025

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Astronomy Essentials

View All
What is the zodiac? Why is it important in astronomy?
Christopher Crockett
January 24, 2025
Visible planets and night sky guide for January
Marcy Curran
January 24, 2025
Mars at its biggest and brightest 2025
Deborah Byrd
January 15, 2025
Lunar occultation of Mars on January 13, 2025. Images here!
Cristina Ortiz
January 14, 2025

Brightest Stars

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Capella is sometimes called the Goat Star
Editors of EarthSky
January 10, 2025
Schedar shines brightly at the Queen’s heart
Editors of EarthSky
December 26, 2024
Orange Aldebaran is Taurus the Bull’s fiery eye
Deborah Byrd
December 12, 2024
Bellatrix is Orion’s 3rd-brightest star
Kelly Kizer Whitt
November 24, 2024

Constellations

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Canis Major and brilliant Sirius in the New Year
Kelly Kizer Whitt
January 5, 2025
Orion the Hunter, the most recognizable constellation
Kelly Kizer Whitt
December 20, 2024
Meet Pisces the Fish, 1st constellation of the zodiac
Bruce McClure
December 10, 2024
Tucana the Toucan is home to the Small Magellanic Cloud
Kelly Kizer Whitt
November 27, 2024

Clusters Nebulae Galaxies

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Meet the Crab Nebula, remnant of an exploding star
Larry Sessions
January 24, 2025
The Orion Nebula (M42) is a starry nursery
Bruce McClure
December 15, 2024
Messier objects are fuzzy patches in the night sky
Armando Caussade
December 8, 2024
Double Cluster in Perseus on October evenings
Bruce McClure
October 4, 2024

Favorite Star Patterns

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Meet the Winter Circle, aka the Winter Hexagon
Bruce McClure
January 16, 2025
The Hyades star cluster: The Face of Taurus the Bull
Bruce McClure
January 8, 2025
The Pleiades – or 7 Sisters – known around the world
Bruce McClure
November 14, 2024
Great Square of Pegasus gallops into the autumn sky
Deborah Byrd
September 10, 2024
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