APOD251024 夜空中的土星
夜空中的土星
图像提供: NASA[1], JPL-Caltech[2], Space Science Institute[3], Mindaugas Macijauskas[4]
英文原文:Explanation: Saturn is bright in Earth's night skies. Telescopic views of the outer gas giant planet and its beautiful rings often make it a star at star parties . But this stunning view of Saturn's rings and night side just isn't possible from telescopes in the vicinity of planet Earth. Peering out from the inner Solar System they can only bring Saturn's day side into view. In fact, this image of Saturn's slender sunlit crescent with night's shadow cast across its broad and complex ring system was captured by the Cassini spacecraft. A robot spacecraft from planet Earth, Cassini called Saturn orbit home for 13 years before it was directed to dive into the atmosphere of the gas giant on September 15, 2017. This magnificent mosaic is composed of frames recorded by Cassini's wide-angle camera only two days before its grand final plunge . Saturn's night will not be seen again until another spaceship from Earth calls. 说明: 土星在地球的夜空中显得明亮[5]。这颗外侧气态巨行星及其美丽的光环,通过望远镜观察,常常成为星空派对[6]中的焦点。然而,这样惊人的土星环和夜侧的景象,从地球附近的望远镜是无法观测到的。从内太阳系向外看,它们只能将土星的白昼面带入视野[7]。 事实上,这幅描绘土星纤细的阳光新月与夜影投射在其广阔而复杂的光环系统上的阴影,是由卡西尼号太空船所拍摄。这艘来自地球的无人太空船,在土星轨道上运行了13年,直到2017年9月15日被指令坠入这颗气态巨行星的大气层。 这幅壮丽的马赛克图像[8]是由卡西尼号的[9]广角相机在其壮观的最终坠入[10]前两天所拍摄。 除非另一艘来自地球的太空船[11]抵达,否则我们无法再次看到土星的夜晚。
明日的图片: Webb's Rho[12]
Authors & editors: Robert Nemiroff[13] (MTU[14]) & Jerry Bonnell[15] (UMCP[16])
NASA Official: Amber Straughn Specific rights apply[17].
NASA Web Privacy[18], Accessibility[19], Notices[20];
A service of: ASD[21] at NASA[22] / GSFC[23],
NASA Science Activation[24]
& Michigan Tech. U.[25]
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>
编辑:陈炳志[26]
[3]https://www.spacescience.org/index.php
[4]https://www.flickr.com/photos/m_macijauskas/
[5]https://earthsky.org/astronomy-essentials/visible-planets-tonight-mars-jupiter-venus-saturn-mercury/
[6]https://nightsky.jpl.nasa.gov/clubs-and-events.cfm
[7]https://spacetelescope.org/news/heic1917/
[8]https://www.flickr.com/photos/m_macijauskas/23826951188/
[9]https://photojournal.jpl.nasa.gov/catalog/PIA17218
[10]https://solarsystem.nasa.gov/missions/cassini/the-journey/the-grand-finale/
[11]https://www.nasa.gov/dragonfly
[12]http://apod.nasa.gov/apod/ap251025.html
[13]http://www.phy.mtu.edu/faculty/Nemiroff.html
[15]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[17]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[18]https://www.nasa.gov/about/highlights/HP_Privacy.html
[19]https://www.nasa.gov/general/accessibility/
[20]https://www.nasa.gov/privacy/
[21]https://astrophysics.gsfc.nasa.gov/
[23]https://www.nasa.gov/centers/goddard/
[24]https://science.nasa.gov/learners
[26]mailto:alfred@ncku.edu.tw
http://apod.nasa.gov/apod/ap251024.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap251024.html