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Clusters Nebulae Galaxies
Meet Omega Centauri, a giant globular star cluster
Omega Centauri is the Milky Way's largest globular star cluster. It contains about 10 million stars. Find out how to see this beautiful behemoth here.
May 6, 2026
Earth
Human World
AI-powered robots helping clean Europe’s ocean floor
AI-powered robots are helping researchers locate and remove waste from Europe’s seafloor, making underwater cleanup safer and more efficient.
May 5, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for May
Visible planets and night sky guide. Tomorrow morning, look for the waning gibbous moon among the stars of the asterism of Sagittarius called the Teapot.
May 5, 2026
Space
Could violent stellar flares make planets more habitable?
Could violent stellar flares actually make planets more habitable? A new study into ultraviolet habitable zones says yes.
May 5, 2026
Space
1st American in space, 65 years ago today
Alan Shepard became the 1st American in space on May 5, 1961. His suborbital flight took place just 3 weeks after the Soviet Union's Yuri Gagarin orbited Earth.
May 5, 2026
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
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
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