APOD250914 太阳系行星:倾斜与自转
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视频地址:
https://www.youtube.com/embed/my1euFQHH-o?rel=0
请使用科学上网方式访问。
Video Credit: NASA[1], Animation: James O'Donoghue[2] (U. Reading[3])
英文原文:Explanation: How does your favorite planet spin? Does it spin rapidly around a nearly vertical axis, or horizontally, or backwards? The featured video animates NASA images of all eight planets in our Solar System to show them spinning side-by-side for an easy comparison. In the time-lapse video , a day on Earth -- one Earth rotation -- takes just a few seconds. Jupiter rotates the fastest, while Venus spins not only the slowest (can you see it?), but backwards. The inner rocky planets across the top underwent dramatic spin-altering collisions during the early days of the Solar System. Why planets spin and tilt as they do remains a topic of research with much insight gained from modern computer modeling and the recent discovery and analysis of hundreds of exoplanets : planets orbiting other stars . 说明: 你最喜爱的行星是如何自转的呢?它是绕着一条几乎垂直的轴快速自转,还是水平自转,甚至是逆向自转?这段主题视频[4]将 NASA 的八大行星[5]在我们的太阳系[6]的图像进行动画处理,并将它们并列[7]呈现自转状态,方便比较。在缩时视频[8]片中,地球的一天(即一次自转)仅需数秒即可完成。 在所有行星之中,木星[9]的自转速度最快,而金星[10]不仅自转最慢(你能看出来吗?),甚至还是逆向自转。视频上方的类地行星(内侧岩质行星)在太阳系早期都曾经历剧烈的[11]碰撞事件,显著改变了它们的自转方式。至于为何行星会呈现目前的自转与倾角,仍是持续研究的主题[12]。现代电脑仿真[13]与数百颗系外行星[14](环绕其他恒星的行星[15])的发现与分析,正为这一问题提供了许多新的见解。
明日的图片: sun belch[16]
Authors & editors: Robert Nemiroff[17] (MTU[18]) & Jerry Bonnell[19] (UMCP[20])
NASA Official: Amber Straughn Specific rights apply[21].
NASA Web Privacy[22], Accessibility[23], Notices[24];
A service of: ASD[25] at NASA[26] / GSFC[27],
NASA Science Activation[28]
& Michigan Tech. U.[29]
太空天文实验室(成功大学物理系)
编辑:林昱丞[30]
[2]https://bsky.app/profile/interplanetary.bsky.social
[3]https://www.reading.ac.uk/meteorology/
[4]https://www.youtube.com/watch?v=my1euFQHH-o
[5]http://apod.nasa.gov/apod/ap060828.html
[6]https://science.nasa.gov/solar-system/solar-system-facts/
[7]https://youtu.be/qhJrpzsKEXo
[8]https://www.youtube.com/embed/my1euFQHH-o
[9]https://science.nasa.gov/jupiter/
[10]https://science.nasa.gov/venus/
[11]https://www.youtube.com/watch?v=lEIGjXbtQwY
[12]http://allwallps.com/bin/02/54/72a.jpg
[13]https://ui.adsabs.harvard.edu/abs/2001Natur.411..767C/abstract
[14]https://science.nasa.gov/exoplanets/
[15]http://apod.nasa.gov/apod/ap151205.html
[16]http://apod.nasa.gov/apod/ap250915.html
[17]http://www.phy.mtu.edu/faculty/Nemiroff.html
[19]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[21]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[22]https://www.nasa.gov/about/highlights/HP_Privacy.html
[23]https://www.nasa.gov/general/accessibility/
[24]https://www.nasa.gov/privacy/
[25]https://astrophysics.gsfc.nasa.gov/
[27]https://www.nasa.gov/centers/goddard/
[28]https://science.nasa.gov/learners
[30]http://apod.nasa.gov/apod/l28091033@gs.ncku.edu.tw
http://apod.nasa.gov/apod/ap250914.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap250914.html
