APOD251103 双螺旋月食
[复制链接] 分享:双螺旋月食
图像提供与版权: Chunlin Liu[1]
英文原文:Explanation: The image was timed to capture a total lunar eclipse -- but it came with quite a twist. First, the eclipse : the fully Earth-shadowed Moon is visible as the orange orb near the top. The eclipsed Moon 's orange color is caused by a slight amount of red light scattered first by Earth's atmosphere , adding a color like a setting Sun . Now, the twist: one of the apparent double helix bands is the Milky Way , the central disk of our home galaxy. The second band is zodiacal light , sunlight scattered by dust in our Solar System . The reason they cross is because the plane where dust orbits our Sun is tilted relative to the plane where stars orbit our Galaxy. This well-known tilt is shown dramatically in the featured wide-angle Mercator-projected horizon to horizon , captured in early September from Mingantu Observing Station in Inner Mongolia , China . 说明: 这张图像的拍摄时间正好捕捉到了月全食,但结果却带来了一个有趣的「转折(Twist)」。 首先,被地球完全屏蔽的月食[2]出现在图像上方附近,呈现橙色球体[3]。 这种橙色[4]的月亮,是因为地球大气层[5]在散射阳光时,只有少量红光能绕过地球并照亮月面,使得月食中的月亮[6]看起来像夕阳[7]般泛红。 这个有趣的「转折(Twist)」是,画面中出现了双螺旋[8]状光带,其中一条是银河系[9],即我们所在的银河系中央盘面;另一条则是黄道光[10],也就是太阳光被太阳系[11]尘埃散射后所形成的微弱光带。它们交叉的原因是因为尘埃绕行太阳的平面[12]相对于银河系恒星轨道平面[13]存在夹角。 这个众所周知的倾角在这张广角[14]图像中被生动的展现。照片采用从地平线延伸到地平线[15]的等距麦卡托投影(Mercator projection)[16], 于中国[17] 内蒙古[18]的 明安图观测站[19]在九月初拍摄完成。
明日的图片: comet sky[20]
Authors & editors: Robert Nemiroff[21] (MTU[22]) & Jerry Bonnell[23] (UMCP[24])
NASA Official: Amber Straughn Specific rights apply[25].
NASA Web Privacy[26], Accessibility[27], Notices[28];
A service of: ASD[29] at NASA[30] / GSFC[31],
NASA Science Activation[32]
& Michigan Tech. U.[33]
太空天文实验室(成功大学物理系)
<br/> 编辑:<a href="mailto:hantzong.su@gmail.com" style="color:gray;" target="_blank">苏汉宗</a> <br/> 编辑:<a href="mailto:alfred@ncku.edu.tw" style="color:gray;" target="_blank">陈炳志</a> 编辑:林昱丞[34]
[1]mailto: springcitystudio at gmail dot com
[2]https://www.timeanddate.com/eclipse/lunar/2025-september-7
[3]http://apod.nasa.gov/apod/ap250911.html
[4]https://www.singlecolorimage.com/get/ff8000/1920x1080
[5]https://science.nasa.gov/earth/earth-atmosphere/earths-atmosphere-a-multi-layered-cake/
[6]https://science.nasa.gov/moon/eclipses/
[7]http://apod.nasa.gov/apod/ap980526.html
[9]https://science.nasa.gov/resource/the-milky-way-galaxy/
[10]https://en.wikipedia.org/wiki/Zodiacal_light
[11]https://spaceplace.nasa.gov/menu/solar-system/
[12]https://en.wikipedia.org/wiki/Ecliptic
[13]https://en.wikipedia.org/wiki/Galactic_plane
[14]https://www.boredpanda.com/blog/wp-content/uploads/2017/04/58f776a0dbb3b_SCaxbnt__605.jpg
[15]http://apod.nasa.gov/apod/ap071221.html
[16]https://en.wikipedia.org/wiki/Mercator_projection
[17]https://en.wikipedia.org/wiki/China
[18]https://youtu.be/KagBk62Digg
[19]https://english.nao.cas.cn/Research2015/Research_Divisions2015/solar/202012/t20201217_256816.html
[20]http://apod.nasa.gov/apod/ap251104.html
[21]http://www.phy.mtu.edu/faculty/Nemiroff.html
[23]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[25]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[26]https://www.nasa.gov/about/highlights/HP_Privacy.html
[27]https://www.nasa.gov/general/accessibility/
[28]https://www.nasa.gov/privacy/
[29]https://astrophysics.gsfc.nasa.gov/
[31]https://www.nasa.gov/centers/goddard/
[32]https://science.nasa.gov/learners
[34]http://apod.nasa.gov/apod/l28091033@gs.ncku.edu.tw
http://apod.nasa.gov/apod/ap251103.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap251103.html
