Copyright:
Matthew Dieterich
原文:
Despite appearances, the sky is not falling. Two weeks ago, however, tiny bits of comet dust were. Featured here is the Perseids meteor shower as captured over Mt. Rainier, Washington, USA. The image was created from a two-hour time lapse video, snaring over 20 meteors, including one that brightened dramatically on the image left. Although each meteor train typically lasts less than a second, the camera was able to capture their color progressions as they disintegrated in the Earth’s atmosphere. Here an initial green tint may be indicative of small amounts of glowing magnesium atoms that were knocked off the meteor by atoms in the Earth’s atmosphere. To cap things off, the central band of our Milky Way Galaxy was simultaneously photographed rising straight up behind the snow-covered peak of Mt. Rainier. Another good meteor shower is expected in mid-November when debris from a different comet intersects Earth as the Leonids. Follow APOD on Facebook: in English or Spanish
中文翻譯:
🌌 儘管外表看似不尋常，天空並沒有掉下來。兩星期前，小塊的彗星塵埃卻是如此！在這裡展示的是在美國華盛頓州的雷尼爾山拍攝到的英仙座流星雨。這幅圖片是由兩小時的延時攝影錄製而成，捕捉到超過20顆流星，其中有一顆在圖片左側驟然亮起。雖然每條流星的痕跡通常只持續不到一秒，但相機能夠捕捉到流星在地球大氣中解體時的顏色變化。這裡的初始綠色可能是由於小量發光的鎂原子被大氣中的原子撞擊所導致的。最後，銀河系的中央帶也在雷尼爾山的雪-covered 峰頂上升起。下次流星雨將於11月中旬，當來自另一顆彗星的碎片與地球相交時，預計會出現獅子座流星雨。
#Perseids #流星雨 #MtRainier #銀河系 #星空 #天文 #戶外攝影 #雲霧中的奇蹟 #Leonids #TimeLapse #APOD #CometDust #MagicOfTheNight
來源:NASA每日圖片
