Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2006 April 24
每日一天文图
探索宇宙！每天一幅不同的影像或照片，并由专业天文学家的简短解释和说明，带你遨游迷人的宇宙。
2006年4月24日（农历二〇〇六年三月二十七）
http://antwrp.gsfc.nasa.gov/apod ... sclouds_beinert.jpg
Star Clouds over Arizona
Credit & Copyright: Ulrich Beinert
Explanation: The clouds in the foreground are much different than the clouds in the background. In the foreground are a photogenic deck of Earth-based water clouds. The long exposure used to create the above photograph makes the light from the left, reflected from Phoenix, Arizona, USA, appear like a sunset. Far in the distance, however, are star clouds from the disk of our Milky Way Galaxy. Billions of stars like our Sun live there, circling our Galactic center every 200 million years. Contrast between the water clouds and the star clouds has been digitally enhanced. Between the two, visible on the upper right, is the planet Jupiter.
美国亚利桑那州上空的星云
影像版权与提供: Ulrich Beinert
解释：前景的云与背景的云有着很多的不同。前景中上镜的是一层地球上的雨云。上面这张照片因为长时间暴光，使得左边从美国亚利桑纳州凤凰城反射在云层上的灯光，造成类似日落时分的景象。然而，在远方的是来自我们银河盘面的星云。数百万象我们太阳一样的恒星住在那里，每200百万年绕我们银河中心一次。雨云与星云之间的对比经过数字加强。在它们之间，可以在右上方看到木星。
Tomorrow's picture: smoking galaxy
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发表于 2006-4-24 15:59:11
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发表于 2006-4-24 19:36:28
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发表于 2006-4-25 00:33:31
lol:lol