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Sun
Sun news: Another X flare, as geomagnetic storms sweep Earth
Sun news for July 5, 2026: New sunspot region AR4482 announced itself with a powerful X1.3 flare. While auroras lit up the sky. More action is on the way!
July 5, 2026
Space
How a planet survived the death of its sunlike star
Scientists have solved the mystery of how a gas giant planet survived the death of its star. The planet migrated inward after the star's red giant phase.
July 5, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for July
EarthSky's visible planets and night sky guide. Tomorrow, the Earth is farthest from the sun. And don't miss a video with the 5 best sky sights of July!
July 5, 2026
Constellations
Ursa Minor the Lesser Bear contains the Little Dipper
Ursa Minor is the Lesser Bear, but you might recognize it as the Little Dipper. Also, its brightest star is Polaris, the North Star.
July 3, 2026
Space
The Milky Way’s arms might not look as we thought
The Milky Way's arms might be farther away than we thought, meaning our galaxy is likely larger than previously believed. Here's how they made the measurements.
July 3, 2026
Human World
How do fireworks get their beautiful colors?
The red, orange, yellow, green, blue and purple colors exploding in the night sky during a fireworks festival are created by the use of metal salts.
July 3, 2026
Space
Top 10 cool things about stars that you probably didn’t know
Here's a collection of 10 cool things about stars that you probably didn't know. Big stars, green stars, black holes, stars by the millions, and more!
July 3, 2026
Space
Groundbreaking Swift spacecraft rescue mission launches
NASA's LINK spacecraft is on its way to save the Swift space telescope. LINK launched earlier today from Kwajalein Atoll in the South Pacific Ocean.
July 3, 2026
Earth
Dog days of summer: Hottest in July and August
The dog days of summer are named for the Dog Star Sirius - the brightest star in the sky - in the constellation Canis Major the Greater Dog. Learn why here.
July 3, 2026
Space
Complex carbon in Mars rocks: Another clue to past life?
Scientists have found complex carbon in Mars rocks that the Perseverance rover has studied. They're the same rocks found in 2024 to contain hints of life.
July 2, 2026
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