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Astronomy Essentials
2026 Eta Aquariid meteor shower best before dawn on May 5
May's Eta Aquariid meteor shower is best in 2026 on the morning of May 5. Find a way to block the moonlight and watch in the hours before dawn.
May 4, 2026
Sun
Sun news: M1.8 flare ends the quiet spell
Sun news for May 4, 2026: M1.8 (moderate) flare ends the quiet spell! AR4424 fires from the western limb. Slow coronal mass ejections may glance Earth today.
Human World
Archaeologists recreate Pompeii victim using AI technology
Archaeologists have used AI technology to recreate a Pompeii victim. The man fled the volcano while trying to protect his head with a terracotta bowl.
May 3, 2026
Brightest Stars
Arcturus, brightest star of the northern sky
Arcturus is the brightest star in the northern half of the sky. It's easy to find in spring in the Northern Hemisphere near the handle of the Big Dipper.
May 3, 2026
Today's Image
See the best deep-sky photos of April 2026
Enjoy this gallery of deep-sky photos for April 2026 from our EarthSky community. If you have a great photo to share, we'd love to see it!
May 3, 2026
Moon Phases
May 1 full moon is a Flower Moon and micromoon
The 1st May full moon happens on May 1. It'll look full on the nights before and after that, too. The 2nd May full moon - a Blue Moon - will fall on May 30-31.
May 1, 2026
Space
Surprise! A Jupiter-like exoplanet with water-ice clouds
A Jupiter-like exoplanet with water-ice clouds? NASA's Webb space telescope has found the 1st signs of cirrus-like clouds on exoplanet Epsilon Indi Ab.
May 1, 2026
Earth
Pyrocumulonimbus clouds are thunderheads spawned by fires
Pyrocumulonimbus clouds are fire-driven thunderstorms. The storms can produce lightning and strong winds that make the fire situation worse.
May 1, 2026
Astronomy Essentials
Human World
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.
May 1, 2026
Human World
May birthstone: The magnificent green emerald
Happy birthday, May babies! The May birthstone is the emerald, a stone once worn by royalty in ancient Babylon and Egypt.
May 1, 2026
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