Space
New organics on Mars raise questions about ancient life
NASA's Curiosity rover has identified the most diverse collection of organics on Mars ever found. They include some organics never seen before.
Moon Phases
May’s full moon is called the Flower Moon
The May full moon occurs in the the middle of the day on May 1. But it will look full on the nights before and after that. Learn more about the Flower Moon.
Constellations

Crater the Cup sits upon Hydra the Snake’s back

Crater the Cup is a dim constellation that sits on the back of Hydra the Water Snake. You can see Crater best on March, April and May evenings in a dark sky.
Space

See great pics of Comet R3 PanSTARRS from our community

Comet R3 PanSTARRS is closest to Earth on April 26. See a cool image from a sun-watching spacecraft, and these fantastic community photos.
Earth

Multiday severe weather outbreak forecast for the Plains

We're expecting multiple days of severe weather, including tornadoes, across the Plains and Midwest this weekend and Monday. See threatened areas here.
Today's Image

Milky Way season is back! See gorgeous pics here

Enjoy the beauty of our home galaxy in these images from the start of the Milky Way season, thanks to our talented EarthSky community!
Sun

Sun news: M flares persist, CMEs nudge Earth

Sun news for April 26, 2026: M flares persist as CMEs nudge Earth. G1 storms are possible today. AR4420 at the central meridian with X-flare potential.
Astronomy Essentials
Tonight

Visible planets and night sky guide for April and May

Visible planets and night sky guide. Look for the waxing gibbous moon shining near the Sickle in Leo the Lion. It'll be right next to the bright star Regulus.
Constellations

Leo the Lion and its easy to see backward question mark

Leo the Lion - one of the zodiacal constellations - is a prominent fixture from April through June in the evening sky. It’s easy to spot by finding the Sickle.
Today's Image

The Trifid Nebula highlights Hubble’s 36th anniversary

It's the Hubble Space Telescope's 36th anniversary! To celebrate, NASA has released an image of the iconic Trifid Nebula. Watch a video here.

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