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Editors of EarthSky

Watch sungrazing Comet MAPS break up near the sun

Sungrazing comet C/2026 A1 (MAPS) apparently didn't survive its close encounter with the sun. Watch the apparent breakup in spacecraft images!

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.

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.

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!

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?

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.

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.

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.

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?

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!