NASA 拍攝日全食的過程,也記錄到了國際太空站!

在這次日食的過程中,NASA很幸運的紀錄到了除了月亮以外的另一個物體。
評論
The International Space Station, with a crew of six onboard, is seen in silhouette as it transits the Sun at roughly five miles per second during a partial solar eclipse, Monday, Aug. 21, 2017 near Banner, Wyoming.  Onboard as part of Expedition 52 are: NASA astronauts Peggy Whitson, Jack Fischer, and Randy Bresnik; Russian cosmonauts Fyodor Yurchikhin and Sergey Ryazanskiy; and ESA (European Space Agency) astronaut Paolo Nespoli. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American continent along with parts of South America, Africa, and Europe.  Photo Credit: (NASA/Joel Kowsky)
The International Space Station, with a crew of six onboard, is seen in silhouette as it transits the Sun at roughly five miles per second during a partial solar eclipse, Monday, Aug. 21, 2017 near Banner, Wyoming. Onboard as part of Expedition 52 are: NASA astronauts Peggy Whitson, Jack Fischer, and Randy Bresnik; Russian cosmonauts Fyodor Yurchikhin and Sergey Ryazanskiy; and ESA (European Space Agency) astronaut Paolo Nespoli. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American continent along with parts of South America, Africa, and Europe. Photo Credit: (NASA/Joel Kowsky)
評論

週一的日全食是全球最重要的事件之一,所謂的日全食是月球運行到地球與太陽中間,而月球剛好完整的擋住了太陽。不過,其實除了月球,也可能有其他的東西會擋住太陽,只是要被拍到的機會並不高。在這次日食的過程中,NASA 很幸運的紀錄到了除了月亮以外的另一個物體。

這個物體就是國際太空站。其實國際太空站並不大,在 350 公里高的地方,一個長 108 公尺、寬 72 公尺(大約足球場大小)的物體其實是很小的一個點,而且速度每秒 7.7 公里也相當快,要拍到的確有很高的難度。

This composite image, made from seven frames, shows the International Space Station. Photo Credit: (NASA/Joel Kowsky)

這次拍攝的攝影師名叫做 Joel Kowsky,他除了使用每秒可拍 1500 張照片的高速攝影機記錄了這次的日食過程,也用標準相機記錄到了國際太空站,而要精準的等到國際太空站剛好跑到地球和太陽中間,可能就需要數個月甚至數年的規劃與等待,至於又剛好是在日食的時候,那可就要運氣了。這次在日食的整個過程中,國際太空站經過地球與太陽中間有三次。

除了太空站以外,NASA 也發表了許多特別的日全食紀錄照片,包括從地球觀察,從日食開始到結束:

This composite image shows the progression of a partial solar eclipse over Ross Lake, in Northern Cascades National Park, Washington on Monday, Aug. 21, 2017. Photo Credit: (NASA/Bill Ingalls)

以及從太空中觀察,可以清楚看到月球在地球上的影子:



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