APOD250803 银河与炸裂的流星
银河与炸裂的流星
图像提供与版权: Andre van der Hoeven[1]
英文原文:Explanation: In about a week the Perseid Meteor Shower will reach its maximum. Grains of icy rock will streak across the sky as they evaporate during entry into Earth's atmosphere . These grains were shed from Comet Swift-Tuttle . The Perseids result from the annual crossing of the Earth through Comet Swift-Tuttle 's orbit, and are typically the most active meteor shower of the year. Although it is hard to predict the level of activity in any meteor shower , in a clear dark sky an observer might see a meteor a minute. This year's Perseids peak just a few days after full moon , and so some faint meteors will be lost to the lunar skyglow . Meteor showers in general are best seen from a relaxing position , away from lights. Featured here is a meteor caught exploding during the 2015 Perseids above Austria next to the central band of our Milky Way Galaxy . 说明: 在下星期左右,英仙座流星雨[2]将达到最大活动期。这些带冰的岩石碎片进入地球大气层[3]时,会因高速磨擦而迅速蒸发,并划过[4]天际。这些碎片来自斯威夫特·塔特尔彗星[5]。英仙座流星雨源自于地球每年穿越斯威夫特·塔特尔彗星[6]轨道留下的碎片,其通常是全年最活跃的流星雨[7]。虽然预测任何流星雨[8]的活动频率较为困难,但在晴朗的无光害的夜空中,观察者每分钟约可以看到一颗流星[9]。今年的英仙座流星雨[10]恰好在满月[11]后几天达到高峰,因此一些黯淡的流星会被月光[12]所遮掩。流星雨[13]适合在远离城市光源的舒适位置[14]欣赏。主题图像[15]展示的是一颗流星在2015年英仙座流星雨期间于奥地利[16]上空爆炸[17]的瞬间,背景则是我们的银河[18]的中央盘面。
明日的图片: open space[19]
Authors & editors: Robert Nemiroff[20] (MTU[21]) & Jerry Bonnell[22] (UMCP[23])
NASA Official: Amber Straughn Specific rights apply[24].
NASA Web Privacy[25], Accessibility[26], Notices[27];
A service of: ASD[28] at NASA[29] / GSFC[30],
NASA Science Activation[31]
& Michigan Tech. U.[32]
太空天文实验室(成功大学物理系)
编辑:林昱丞[33]
[1]https://www.flickr.com/photos/avdhoeven/
[2]https://science.nasa.gov/solar-system/meteors-meteorites/perseids/
[3]https://www.nasa.gov/general/what-is-earths-atmosphere/
[4]http://apod.nasa.gov/apod/ap150813.html
[5]https://science.nasa.gov/solar-system/comets/109p-swift-tuttle/
[6]http://apod.nasa.gov/apod/ap960219.html
[7]http://www.amsmeteors.org/meteor-showers/meteor-shower-calendar/
[8]https://apod.nasa.gov/cgi-bin/apod/apod_search?tquery=meteor+shower
[9]https://en.wikipedia.org/wiki/Meteoroid#Meteors
[10]http://apod.nasa.gov/apod/ap240826.html
[11]http://apod.nasa.gov/apod/ap240915.html
[12]http://apod.nasa.gov/apod/ap150615.html
[13]https://www.space.com/32868-perseid-meteor-shower-guide.html
[15]https://www.flickr.com/photos/avdhoeven/20142339228/sizes/c/
[16]https://en.wikipedia.org/wiki/Austria
[17]http://apod.nasa.gov/apod/ image/1508/MeteorBoom_vanderHoeven_750.mp4
[18]https://science.nasa.gov/universe/galaxies/
[19]http://apod.nasa.gov/apod/ap250804.html
[20]http://www.phy.mtu.edu/faculty/Nemiroff.html
[22]https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
[24]http://apod.nasa.gov/apod/lib/about_apod.html#srapply
[25]https://www.nasa.gov/about/highlights/HP_Privacy.html
[26]https://www.nasa.gov/general/accessibility/
[27]https://www.nasa.gov/privacy/
[28]https://astrophysics.gsfc.nasa.gov/
[30]https://www.nasa.gov/centers/goddard/
[31]https://science.nasa.gov/learners
[33]http://apod.nasa.gov/apod/l28091033@gs.ncku.edu.tw
http://apod.nasa.gov/apod/ap250803.html
http://sprite.phys.ncku.edu.tw/astrolab/mirrors/apod/ap250803.html