Astronomy
Climate Change Is Raising the Temperature on Global Conflict
In a new book, a long-time foreign correspondent examines the underappreciated links between climate change and violent conflict
Anyone Can Learn Echolocation in Just 10 Weeks—And It Remodels Your Brain
Human echolocation repurposes parts of the brain’s visual cortex for sound, even in sighted people
Watch SpaceX launch next-gen US spy satellites today on 100th Falcon 9 flight of the year (video)
The Daring Russian Geneticist Whose Experiments on Silver Foxes Explained Domestication Has Died
Lyudmila Trut devoted her life to studying the process of domestication by selectively breeding friendly foxes
Status Report: Gravitational Waves
Astronomers at the International Astronomical Union report that we have now detected more than 200 gravitational-wave events, most the merger of two black holes.
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Tonight's Perseid Meteor Shower May Be Dipped in Aurora Sauce
The Perseids peak on Sunday night, August 11-12 and just might be joined by a colorful display of northern lights.
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Woo-hoo — The Perseid Meteor Shower Is Coming!
It's time again for the annual August meteor-shower fest, the Perseids. This year's display should be a beauty with only minor moonlight and a special surprise at dawn.
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This Week's Sky at a Glance, August 9 – 18
The Perseid meteor shower peaks late Sunday night August 11th and maybe Monday night too. Jupiter and Mars have a close conjunction on the morning of the 14th, looking radically different in the same telescopic view.
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Prepare for the Perseids and a Pretty Planetary Pairing
The year’s long-awaited Perseid meteor shower will be accompanied by a graceful planetary conjunction. It’s well worth staying up all night to watch.
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The Hubble Ultra-Deep Field, 15 Years Later
Fifteen years ago, the Hubble Space Telescope gazed intently at the infrared glow of galaxies in a tiny fraction of the sky. New research shows how this patch of space has changed since then.
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Neutron Stars Might Be Squishy Inside
New data on the brightest pulsar observed with a telescope on the International Space Station suggests neutron star interiors are "squishy."
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Enroll in the School of Stars
Amateur astronomers are all life-long learners — and this "back to school" time of year provides just the right motivation.
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This Week's Sky at a Glance, August 2 – 11
The Perseid meteors ramp up this week to their peak. Saturn is nicely up in the east by late evening. Jupiter and Mars near their conjunction in the morning sky. And there's a story behind Poniatowski's Bull.
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Does This Mars Rock Show a "Potential Biosignature"? Or Just "Wet Chemistry"?
"Leopard spots" on a Mars rock could come from life — or they could simply be a sign of a type of chemical reaction that requires water.
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August Podcast: Nova Watch in the Northern Crown
Let’s go on a night-sky tour of the stars and planets that you’ll see overhead during August. Find a good seat for some great “shooting stars,” watch Saturn climb in the eastern sky in early evening, check out the summer's brightest stars, and start looking for a once-in-your-lifetime star blast.
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Reading the Tea Leaves: The Future of the Hubble and Chandra Space Telescopes
Future funding for NASA's remaining Great Observatories — Chandra X-ray Observatory and Hubble Space Telescope — is still up in the air.
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David Crawford, 1931–2024
A professional astronomer turned dark-sky champion, David L. Crawford became synonymous with the fight against light pollution around the world.
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Neutron Star Eaten by Small Black Hole (Probably)
Gravitational-wave astronomers have identified ripples in spacetime from the coalescence of a neutron star with what’s likely one of the smallest black holes ever found.
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