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Earth
Wildfire smoke is choking Canada, Great Lakes and Northeast
Wildfire smoke is pouring across Canada and into the US in the Great Lakes and Northeast. These areas will continue to see poor air quality into the weekend.
July 16, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for July
EarthSky's visible planets and night sky guide. The crescent moon meets the star Regulus this evening. Look for earthshine on the unlit part of the moon.
Space
Shoemaker-Levy 9 impact on Jupiter 32 years ago
Comet Shoemaker-Levy 9 hit Jupiter in 1994, 32 years ago, scarring the planet's surface and leaving behind water that remained in the atmosphere for decades.
July 16, 2026
Sun
Sun news: A fiery sunspot region is showing its nose
Sun news July 16, 2026: A hidden sunspot region behind the southeast limb is already leading flare production, firing a C8.9. Is a returning region inbound?
July 16, 2026
Constellations
Hercules the Strongman and a great globular cluster
Hercules the Strongman is a great constellation to view in Northern Hemisphere summer. With binoculars you can see Hercules' remarkable star cluster, M13.
July 16, 2026
Space
Titan and Pluto share same mysterious molecule: What is it?
Scientists have discovered a unknown molecule on both Titan and Pluto. It's a puzzle, since the 2 worlds are so different from each other.
July 15, 2026
Earth
How the monsoon could impact wildfires in the American West
A monsoon could impact wildfires in the American West. Monsoonal rains can bring relief, but they can also bring gusty winds and lightning.
July 15, 2026
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
Today's Image
Best deep-sky photos of June 2026 from EarthSky community
Enjoy this gallery of deep-sky photos from June 2026 by our EarthSky community. If you have a great photo to share, we'd love to see it!
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
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