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.
Posts by
Editors of EarthSky
Star-hop from Orion to Sirius: See them before they go!
Star-hopping is going from stars you know to stars you don't know. Star-hop from the constellation Orion to Sirius, sky's brightest star, before they're gone.
April 3, 2026
Easter is April 5 and Orthodox Easter is April 12
In 2026, Easter falls on April 5. It falls on the first Sunday after the first full moon after the March equinox. More about the date of Easter, here.
April 3, 2026
Watch for the daytime moon after sunrise this week
Watch for the beautiful daytime moon this week, a pale orb floating against a blue sky in the morning hours. Look west! You'll see it!
April 2, 2026
Comet Hale-Bopp closest to the sun 29 years ago today
Comet Hale-Bopp was at its closest point to the sun 29 years ago today. It was widely seen from the Northern Hemisphere. When will we see it again?
April 1, 2026
The April birthstone is the diamond, the hardest known gem
Happy birthday, April babies! The April birthstone, the diamond, is the hardest of the known gems. And it's a popular choice for engagement rings.
April 1, 2026
Biggest earthquake in North America 62 years ago today
On Good Friday, March 27, 1964, south-central Alaska heaved under the biggest earthquake recorded in North America, registering a 9.2 on the Richter scale.
March 27, 2026
A Spring Triangle of stars heralds the season
As the Northern Hemisphere enters spring, look for the Spring Triangle rising in the east, made up of bright stars from 3 prominent constellations.
March 22, 2026
What makes a halo around the sun or moon?
A halo around the sun or moon often appears as a glowing ring in the sky. It’s a stunning sight, but have you ever wondered what causes it?
March 18, 2026
What’s a galaxy? All you need to know about galaxies
What is a galaxy? We live in a galaxy called the Milky Way. But there is so much more to know about these grand and glorious star islands in space!
March 18, 2026
What are the Ides of March, and why should you beware?
What are the Ides of March? That's March 15. In Shakespeare's play, Julius Caesar was warned to "Beware the Ides of March" before his assassination.
March 15, 2026
