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Earth
How does smoke from wildfires affect birds?
Smoke from distant wildfires can affect birds in several ways, such as through changes in health, vocalization behavior and migratory patterns.
July 15, 2026
Tonight
Find Polaris and Thuban via the Big Dipper in July
Polaris and Thuban are famous for serving - now or thousands of years ago - as Earth's northern pole star. Use the Big Dipper to find them tonight.
July 15, 2026
Sun
Sun news: Solar action is on the far side
Sun news July 15, 2026: Far-side fireworks! Departed sunspots keep flaring beyond the limb, while glancing CME blows nudged Earth to Kp 4 this morning.
July 15, 2026
Human World
Space
Giant space mirror approved to test sunlight on demand
The Federal Communications Commission has approved a test of a giant space mirror, despite fears that this could harm ecosystems, people and science.
July 14, 2026
Space
Hera mission will arrive at asteroid impact site in November
The Hera mission will reach Didymos and Dimorphos in 2026 to reveal what happened after DART crashed into Dimorphos in the first planetary defense test.
July 14, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for July
EarthSky's visible planets and night sky guide. Tomorrow evening, look for the thin moon near brilliant planet Venus and the star Regulus.
July 14, 2026
Brightest Stars
Summer Triangle star Deneb is distant and luminous
When you gaze at the bright star Deneb, you’re gazing across thousands of light-years of space at one of the bright stars of the huge Summer Triangle asterism.
July 14, 2026
Earth
The giraffe weevil: When a beetle grows a giraffe’s neck
The giraffe weevil is a tiny Madagascan beetle with a super-long neck, leaf-rolling skills and a fantastic evolutionary story.
July 13, 2026
Human World
4th batch of Pentagon UAP files: ‘Floating brain’ goes viral
The 4th batch of the Pentagon UAP files has just been released. The files range from a "floating brain" video to more historical documents, including from NASA.
July 12, 2026
Constellations
See 3 small constellations near the Summer Triangle
You need a dark country sky to see these 3 small constellations: Vulpecula, Delphinus and Sagitta. They are all near the Summer Triangle.
July 12, 2026
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