NASA 美国宇航局的每日一图 3月份
发布: 2009-1-14 17:53 | 作者: webmaster | 来源: 本站原创 | 查看: 173次
2008 March 1 
影像版权与提供: Alex Mukensnable
说明: 在太阳反向天空升起的带食月轮，2月20日照耀着夏威夷诸岛。影像拍摄的地点，是在夏威夷大岛基亚山4200公尺高的山顶上，此处也是天文学家最钟爱的观测地点。这幅影像呈现太阳光和影的精彩演出，其中有前景的积雪锥状火山口、山峰暗影中的月亮，以及延伸盖过较低层云并穿过地球致密大气的长长暗影。随着月食接近落幕，四十万公里外的月面，也清晰地映现了地球投射在上面的弯曲临边。
Explanation: Just opposite the setting Sun, the already-eclipsed Moon rose over the Hawaiian Islands on February 20. A view near the 14,000 foot peak of volcanic Mauna Kea on the Big Island, a popular spot for astronomers, offered this remarkable play of shadows and sunlight. With snowy cinder cones in the foreground, the Moon lies within the shadow cast by the mountain -- a shadow extending across a lower cloud deck and on through Earth's dense atmosphere. As the lunar eclipse is drawing to a close, the curved shadow of the limb of planet Earth itself can also be traced across the Moon's surface, some 400,000 kilometers away.
Explanation: Just opposite the setting Sun, the already-eclipsed Moon rose over the Hawaiian Islands on February 20. A view near the 14,000 foot peak of volcanic Mauna Kea on the Big Island, a popular spot for astronomers, offered this remarkable play of shadows and sunlight. With snowy cinder cones in the foreground, the Moon lies within the shadow cast by the mountain -- a shadow extending across a lower cloud deck and on through Earth's dense atmosphere. As the lunar eclipse is drawing to a close, the curved shadow of the limb of planet Earth itself can also be traced across the Moon's surface, some 400,000 kilometers away.
