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News
Astronomy Picture of the Day - Witness XZ Andromedae Wink
4+ day, 22+ hour ago (131+ words) This particular light curve was created with Citizen Astronomy, an open-source software for differential...
Astronomy Picture of the Day - LDN 1295: The Giraffe Nebula
3+ day, 21+ hour ago (142+ words) Catalogue of Dark Nebulas, compiled in 1962 by American astronomer Beverly Lynds, a pioneer for women in astronomy...
Astronomy Picture of the Day - Solar Eclipses and Culture
1+ week, 4+ day ago (291+ words) Eclipses are an example of the longstanding connection between astronomy and society....
Astronomy Picture of the Day - Mostly Perseids
3+ week, 1+ day ago (349+ words) Explanation: Recorded the night of August 12-13, images from four dedicated meteor-monitoring cameras at an astronomical observatory in Czechia were aligned and combined to create this all-night, all-sky view. On that night, the total count came to 1,706 meteors. And since that…...
Astronomy Picture of the Day - Eclipse Pair
2+ week, 1+ day ago (349+ words) Explanation: Eclipses tend to come in pairs. Twice a year, during an eclipse season that lasts about 34 days, Sun, Moon, and Earth can nearly align. Then the new and full phases of the Moon, separated by just over 14 days, create…...
Astronomy Picture of the Day - Hubble: Decagon Around Saturn's South Pole
5+ day, 23+ hour ago (375+ words) Explanation: Why are Saturn’s poles geometric? Saturn’s North Pole has been known to be surrounded by a hexagonal (6 sides) cloud since discovery in 1987 in data taken by NASA’s Voyager spacecrafts, which quickly flew past the ringed world in the early…...
Astronomy Picture of the Day - Perseids from Perseus
3+ week, 5+ day ago (271+ words) Explanation: This was a good year for the Perseids meteor shower. A key reason was the Moon was absent from lighting up Earth's night sky so that more meteors were visible than usual. Where was the Moon? It was busy…...
Astronomy Picture of the Day - Cassini Approaches Saturn
3+ week, 22+ hour ago (327+ words) Explanation: What would it look like to approach the grand planet Saturn? One doesn't have to just imagine -- the Cassini spacecraft did just this in 2004, recording thousands of images along the way, and hundreds of thousands more since entering orbit....
Astronomy Picture of the Day - Milky Way over Yellowstone
4+ week, 1+ day ago (244+ words) Explanation: The Milky Way was not created by an evaporating lake. The colorful pool of water, about 10 meters across, is known as Silex Spring and is located in Yellowstone National Park in Wyoming, USA. Illuminated artificially, the colors are caused…...
Astronomy Picture of the Day - Comet 220P in Outburst
2+ week, 6+ day ago (362+ words) Explanation: Comet 220P is unexpectedly bright. Normally, periodic Comet 220P/McNaught is so dim that to see it requires a telescope. Two surprising outbursts this year, however, have made it about 20,000 times brighter than usual, so that it is now visible with…...