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Artificial intelligence finds 56 new gravitational lens candidates
Using the same technology Tesla is using to teach cars to drive themselves, European astronomers are using artificial intelligence to seek out and find many new gravitational lenses.
October 24, 2017
Apogee moon, still near Saturn
Agogee means 'farthest from Earth.' This most-distant moon of October, 2017 lingers near Saturn on the sky's dome.
October 24, 2017
How cold and wet this winter in the US?
La Niña (or not) is the biggest wildcard in how this year’s winter might shape up. Overall, NOAA's outlook suggests a relatively cool, wet U.S. North - and warm, dry U.S. South - this winter.
October 23, 2017
From Arizona, 2 Taurid fireball photos
First 2 Taurid fireball photos we've seen this year, but we're expecting more. These 2 photographers, 100 miles apart, likely saw the same bright meteor.
October 23, 2017
Reliving Cassini’s final moments
"Cassini managed to survive for 91 seconds in this epic battle, before tipping over backward during the last 8 seconds and then finally losing radio contact with Earth."
October 23, 2017
Alligators eat sharks
Jaws beware! Alligators might be coming for you, according to new research.
October 23, 2017
Keep watching moon, Saturn, Antares
On October 23 and 24, the bright object near the waxing moon is the planet Saturn. A modest, backyard telescope will show its rings.
October 23, 2017
Astronomers confirm Earth has an asteroid buddy
It's the best and most stable example to date of a near-Earth companion, or "quasi-satellite." It's a small asteroid called 2016 HO3. It travels along with Earth in orbit around the sun.
October 22, 2017
See it! Orionid meteors this weekend
This weekend's Orionid meteor shower didn't disappoint. EarthSky community photos, here.
October 22, 2017
Young moon, refracted by atmosphere
Wonderful timelapse from Mike Cohea showing the October 20 young moon - only 1.3% illuminated - setting over Newport, Rhode Island, being refracted by Earth's atmosphere.
October 22, 2017
