保护地球, 探索宇宙, 发现文明
2020年11月16日 Light and Glory over Crete Image Credit & Copyright: Tomáš Slovinský Explanation: The month was July, the place was the Greek island of Crete, and the sky was spectacular. Of course there were the usual stars like Polaris, Vega, and Antares — and that common asterism everyone knows: the Big Dipper. But this sky was just getting started...
2020年8月12日 The Shifting Tails of Comet NEOWISE Image Credit & Copyright: Ignacio Llorens Explanation: Keep your eye on the ion tail of Comet NEOWISE. A tale of this tail is the trail of the Earth. As with all comets, the blue ion tail always points away from the Sun. But as Comet C/2020 F3 (NEOWISE) rounded our Sun, its ion tail pointed in slightly diff...
2020年8月3日 Comet NEOWISE over Vikos Gorge Image Credit & Copyright: Constantine Emmanouilidi Explanation: Did the Earth part to show us this comet? Of course not, even if this image makes it seem that way. Pictured far in the background is Comet NEOWISE as it appeared about two weeks ago over northern Greece. Above the comet are many stars including the ...
2020年7月27日 Comet and Lightning Beyond Bighorn Mountains Image Credit & Copyright: Kevin Palmer Explanation: Normally, Steamboat Point looks cool — but not this cool. Every day, the iconic peak of the Bighorn Mountains is an interesting sight, in particular from US Highway 14 in Wyoming. On some rare days, the rocky vertical ridges look even more i...
2020年7月24日 MAGIC NEOWISE Image Credit & Copyright: Urs Leutenegger Explanation: The multi-mirror, 17 meter-diameter MAGIC telescopes reflect this starry night sky from the Roque de los Muchachos European Northern Observatory on the Canary Island of La Palma. MAGIC stands for Major Atmospheric Gamma Imaging Cherenkov and the telescopes can see the brief ...
2020年7月23日 Fairytale NEOWISE Image Credit & Copyright: Stephane Guisard (Los Cielos de America, TWAN) Explanation: Comet dust falls through a twilight sky in this dream-like scene, but it’s not part of a fairytale movie. Still, Castle Neuschwanstein, nestled in the Bavarian Alps, did inspire Disneyland’s Sleeping Beauty Castle. Captured on J...
2020年7月22日 The Structured Tails of Comet NEOWISE Image Credit & Copyright: Zixuan Lin (Beijing Normal U.) Explanation: What is creating the structure in Comet NEOWISE’s tails? Of the two tails evident, the blue ion tail on the left points directly away from the Sun and is pushed out by the flowing and charged solar wind. Structure in the ion tail ...
2020年7月20日 Comet NEOWISE and Nebulae Image Credit & Copyright: Jarek Oszywa Explanation: Would you brave wild animals to photograph this sky? One astrophotographer did — and we all get to reap the rewards. First, thousands of stars were visible with many of the brightest impressively blue. Next, several red-glowing nebulae were discernible, includ...
2020年7月18日 Finding NEOWISE Image Credit & Copyright: Tom Masterson Explanation: If you can see the stars of the Big Dipper, you can find comet NEOWISE in your evening sky tonight. After sunset look for the naked-eye comet below the bowl of the famous celestial kitchen utensil of the north and above your northwestern horizon. You’re looking for a f...
2020年7月17日 NEOWISE of the North Image Credit & Copyright: Bill Peters Explanation: After local midnight on July 14 comet NEOWISE was still above the horizon for Goldenrod, Alberta, Canada, just north of Calgary, planet Earth. In this snapshot it makes for an awesome night with dancing displays of the northern lights. The long-tailed comet and auroral di...