2021年05月30日 Aurora over Clouds Image Credit & Copyright: Daniele Boffelli Explanation: Auroras usually occur high above the clouds. The auroral glow is created when fast-moving particles ejected from the Sun impact the Earth’s magnetosphere, from which charged particles spiral along the E […]
2021年05月29日 Lunar Dust and Duct Tape Image Credit: Apollo 17, NASA Explanation: Why is the Moon so dusty? On Earth, rocks are weathered by wind and water, creating soil and sand. On the Moon, the history of constant micrometeorite bombardment has blasted away at the rocky surface creating a layer of
2021年05月28日 Total Lunar Eclipse from Sydney Image Credit & Copyright: Peter Ward (Barden Ridge Observatory) Explanation: The reddened shadow of planet Earth plays across the lunar disk in this telescopic image taken on May 26 near Sydney, New South Wales, Australia. On that crisp, clear autumn
2021年05月26日 The Outburst Clouds of Star AG Car Image Credit: NASA, ESA, STScI; Processing: Judy Schmidt; Text: Anders Nyholm Explanation: What created these unusual clouds? At the center of this 2021 Hubble image sits AG Carinae, a supergiant star located about 20,000 light-years away in the souther
2021年05月25日 The Moon During a Total Lunar Eclipse Video Credit: Wang Letian & Zhang Jiajie Explanation: How does the Moon’s appearance change during a total lunar eclipse? The featured time-lapse video was digitally processed to keep the Moon bright and centered during the 5-hour eclipse
2021年05月24日 Lightning Eclipse from the Planet of the Goats Image Credit & Copyright: Chris Kotsiopoulos (GreekSky) Explanation: Thunderstorms almost spoiled this view of the spectacular 2011 June 15 total lunar eclipse. Instead, storm clouds parted for 10 minutes during the total eclipse phase
2021年05月23日 The Galaxy Tree Image Credit & Copyright: César Vega Toledano ; Rollover Annotation: Judy Schmidt Explanation: First came the trees. In the town of Salamanca, Spain, the photographer noticed how distinctive a grove of oak trees looked after being pruned. Next came the galaxy. The ph
2021年05月21日 Utopia on Mars Image Credit: NASA, The Viking Project, M. Dale-Bannister (Washington University) Explanation: Expansive Utopia Planitia on Mars is strewn with rocks and boulders in this 1976 image. Constructed from the Viking 2 lander’s color and black and white image data, the sce
