Sign Up for Our Amazing Newsletter!

A daily update by email. Science news, great photos, sky alerts.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Tonight

Happy May Day! Today is an astronomy holiday
Happy May Day! This annual celebration has its roots in astronomy as 1 of 4 cross-quarter days. Dancing around a maypole is a traditional May Day celebration.
Deborah Byrd
May 1, 2026

Astronomy Essentials

View All
Happy May Day! Today is an astronomy holiday
May 1, 2026
2026 Eta Aquariid meteor shower best before dawn on May 5
May 1, 2026
Visible planets and night sky guide for April and May
April 30, 2026
What is a micromoon? We have 2 coming in May
April 29, 2026

Brightest Stars

View All
Alpha Centauri, the star system closest to our sun
April 17, 2026
Lonely Alphard is the brightest star in Hydra
March 29, 2026
Mizar and Alcor in the bend of the Big Dipper
March 10, 2026
The Winter Triangle stands out in the night sky
March 4, 2026

Constellations

View All
Crater the Cup sits upon Hydra the Snake’s back
April 26, 2026
Leo the Lion and its easy to see backward question mark
April 24, 2026
See Antlia the Air Pump on April evenings
April 16, 2026
Hydra the Water Snake, the longest constellation
April 15, 2026

Clusters Nebulae Galaxies

View All
Meet M13, the Great Globular Cluster in Hercules
April 21, 2026
Coma Berenices galaxy cluster, best in April and May
April 14, 2026
The Beehive Cluster: A swarm of 1,000 stars
March 1, 2026
Messier objects are fuzzy patches in the night sky
January 29, 2026

Favorite Star Patterns

View All
The Big and Little Dipper: How to find them in spring
March 31, 2026
A Spring Triangle of stars heralds the season
March 22, 2026
Meet the Winter Circle, aka the Winter Hexagon
January 15, 2026
The Hyades star cluster: The Face of Taurus the Bull
January 11, 2026
EarthSky YouTube Channel
YouTube
Twitter
Facebook
Instagram
Store
Donate
WEbsite by Milkyway.co
About
Contact Us
Terms & PRivacy