发射羽流：SpaceX 的太空水母

  图像提供 & 版权[1]:  Michael Seeley[2] 

 文稿: Cecilia Chirenti[3] (NASA[4] GSFC[5], UMCP[6], CRESST II[7])  

 说明： 就算你爱空想[8]，也很难常常遇见如此壮观的太空水母[9]景象。 这张精选图像[10]记录了SpaceX[11]猎鹰9号[12]于3月4日自佛罗里达州[13] 甘迺迪太空中心[14]的卡纳维拉尔角发射升空。 此次发射发生在日出[15]前52分钟，当时第二级火箭[16]的尾焰[17]已高悬天空，正好捕捉到初升的太阳[18]光，而摄影者仍处在黑暗中。 这种光影交错的景象，通常在黎明或黄昏[19]时分出现，使得使得尾焰(主要成分是水汽[20]与二氧化碳[21])看起来像一团发光的云。。 它看起来像是在向下坠落，其实是因为火箭在飞向太空[22]的过程中会沿着地球的曲率[23]飞行。 与此相关的现象还有暮光现象[24]，它会产生色彩斑斓的凝结尾迹[25]，有时会被误认为UFO[26]。 不过，如果你好奇的话：90年代，NASA[27]曾经将真正的水母[28]送入太空，作为科学实验[29]的一部分。  明日的图片： What's next?[30] 

  Authors & editors:  Robert Nemiroff[31] (MTU[32]) & Jerry Bonnell[33] (UMCP[34])

 NASA Official:  Amber Straughn Specific rights apply[35].

 NASA Web Privacy[36], Accessibility[37], Notices[38]; 

 A service of: ASD[39] at NASA[40] / GSFC[41], 

 NASA Science Activation[42] 

& Michigan Tech. U.[43]

 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[44]

[1]http://apod.nasa.gov/apod/lib/about_apod.html#srapply

[2]https://www.mseeley.net/

[3]https://science.gsfc.nasa.gov/sci/bio/cecilia.bertonimarthahadlerchirenti

[4]https://www.nasa.gov/

[5]https://www.nasa.gov/goddard/

[6]https://www.astro.umd.edu/people/cecilia-chirenti

[7]https://cresst2.umd.edu/

[8]https://www.youtube.com/watch?v=3VXERT7uu3Y

[9]https://en.wikipedia.org/wiki/Space_jellyfish

[10]https://www.flickr.com/photos/76093456@N04/55129715198

[11]https://www.spacex.com/

[12]https://www.spacex.com/vehicles/falcon-9

[13]https://en.wikipedia.org/wiki/Florida

[14]https://www.kennedyspacecenter.com/

[15]https://www.weather.gov/box/sunmoon

[16]https://www.nasa.gov/history/75-years-ago-first-launch-of-a-two-stage-rocket/

[17]http://apod.nasa.gov/apod/ap251015.html

[18]http://apod.nasa.gov/apod/ap240921.html

[19]https://www.rmg.co.uk/stories/time/when-dawn-dusk-twilight

[20]https://science.nasa.gov/earth/earth-observatory/global-maps/water-vapor/

[21]https://science.nasa.gov/earth/explore/earth-indicators/carbon-dioxide/

[22]https://www.nasa.gov/general/where-does-space-begin-we-asked-a-nasa-scientist-episode-43/

[23]http://apod.nasa.gov/apod/ap230513.html

[24]https://en.wikipedia.org/wiki/Twilight_phenomenon

[25]https://science.nasa.gov/earth/earth-observatory/criss-crossing-contrails-80476/

[26]https://nightsky.jpl.nasa.gov/news/39/

[27]https://www.nasa.gov/

[28]https://ocean.si.edu/ocean-life/invertebrates/jellyfish-and-comb-jellies

[29]https://www.pbs.org/wgbh/nova/article/what-space-jellyfish-tell-us-about-interplanetary-travel/

[30]http://apod.nasa.gov/apod/ap260320.html

[31]http://www.phy.mtu.edu/faculty/Nemiroff.html

[32]http://www.phy.mtu.edu/

[33]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html

[34]http://www.astro.umd.edu/

[35]http://apod.nasa.gov/apod/lib/about_apod.html#srapply

[36]https://www.nasa.gov/about/highlights/HP_Privacy.html

[37]https://www.nasa.gov/general/accessibility/

[38]https://www.nasa.gov/privacy/

[39]https://astrophysics.gsfc.nasa.gov/

[40]https://www.nasa.gov/

[41]https://www.nasa.gov/centers/goddard/

[42]https://science.nasa.gov/learners

[43]http://www.mtu.edu/

[44]mailto:alfred@ncku.edu.tw

http://apod.nasa.gov/apod/ap260319.html

http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap260319.html