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Visible planets and night sky guide for May
Marcy Curran
May 7, 2026
Clusters Nebulae Galaxies
Meet Omega Centauri, a giant globular star cluster
Bruce McClure
May 6, 2026
Astronomy Essentials
2026 Eta Aquariid meteor shower best before dawn on May 5
Editors of EarthSky
May 4, 2026
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Meteor showers are here! 10 easy tips for watching
EarthSky Voices
April 21, 2026
min read
What makes a halo around the sun or moon?
Editors of EarthSky
March 18, 2026
min read
What’s a supermoon? Here are the supermoons in 2026
Deborah Byrd
Marcy Curran
January 1, 2026
min read
Earth
The Tunguska explosion rocked Siberia 117 years ago
Paul Scott Anderson
Kelly Kizer Whitt
June 29, 2025
min read
The Mount St. Helens deadly eruption was 45 years ago
Deanna Conners
Kelly Kizer Whitt
May 18, 2025
min read
The Wild Duck cluster, M11, a lovely open cluster in Scutum
Bruce McClure
August 8, 2024
min read
How big are asteroids? Compare sizes in this video
Claudia Crowley
November 3, 2023
min read
Full Blue Moon near Saturn: It’s a supermoon on August 30-31
Marcy Curran
August 20, 2023
min read
A red rainbow happens when the sun is low
Deborah Byrd
August 10, 2023
min read
Moon near the Pleiades before dawn on July 13 and 14
Marcy Curran
July 12, 2023
min read
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