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Earth
Lake Powell is shrinking toward ‘dead pool’ levels
Lake Powell is the 2nd-largest reservoir in the U.S. But with climate and usage stresses, the lake is shrinking. It could reach dead pool by spring 2027.
July 31, 2026
Sun
Sun news: M flare breaks lull as Jupiter sails by
Sun news July 31, 2026: An M1.9 flare from AR4492 broke the activity lull. It sent out a powerful burst of sun-stuff, which Jupiter appeared to soar through.
Astronomy Essentials
Planet-observing tips: Here’s how to tour the solar system
Get our top tips for planet-observing, from the innermost and elusive Mercury out to faint blue Neptune and everything in between. Top tips here!
July 31, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for July and August
EarthSky's visible planets and night sky guide. See a video about August's splendid sky sights, including meteors, a solar eclipse and our own Milky Way galaxy.
July 31, 2026
Astronomy Essentials
Look for Mercury farthest from the morning sun on August 2
Mercury will reach its greatest elongation - greatest distance from the sunrise - on August 2, 2026. Look east at dawn. It'll be close to Jupiter on August 15.
July 31, 2026
Space
Wandering black hole spotted shredding a star
Astronomers have spotted a wandering black hole shredding a star. This supermassive black hole is not at the center of a galaxy ... It's roaming the outskirts.
July 30, 2026
Space
A rocket will hit the moon on August 5: New animation here!
A Falcon 9 rocket will hit the moon at 1:35 a.m. CDT on August 5, 2026. Who can see it? And what might you see? Answers here.
July 30, 2026
Earth
It’s Katmai bear cam season! Livestream here
The world-famous Katmai bear cam is live! Watch brown bears at Katmai National Park now and explore the livestream to learn more about these incredible animals.
July 30, 2026
Astronomy Essentials
What are star trails, and how do I photograph them?
Star trails are long-exposure photographs of stars taken as Earth turns, resulting in streaks of light across the sky. Here's how to photograph star trails.
July 30, 2026
Brightest Stars
Meet Delta Scorpii, aka Dschubba
Delta Scorpii, also known as Dschubba, is a variable star in the constellation Scorpius. With your eyes alone, you can check its brightness for yourself.
July 30, 2026
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