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原文:
Jupiter has auroras. Like near the Earth, the magnetic field of our Solar System’s largest planet compresses when impacted by a gust of charged particles from the Sun. This magnetic compression funnels charged particles towards Jupiter’s poles and down into the atmosphere. There, electrons are temporarily excited or knocked away from atmospheric gases, after which, when de-exciting or recombining with atmospheric ions, auroral light is emitted. The featured illustration portrays the magnificent magnetosphere around Jupiter in action. In the inset image released last month, the Earth-orbiting Chandra X-ray Observatory shows unexpectedly powerful X-ray light emitted by Jovian auroras, depicted in false-colored purple. That Chandra inset is superposed over an optical image taken at a different time by the Hubble Space Telescope. This aurora on Jupiter was seen in October 2011, several days after the Sun emitted a powerful Coronal Mass Ejection (CME).
中文翻譯:
🚀 木星的極光 🌌
木星像地球一樣擁有極光。這個太陽系最大行星的磁場，在被太陽發射的帶電粒子沖擊時會被壓縮，並將帶電粒子引導向木星的極地，然後進入其大氣中。在那裡，電子會被激發或從大氣氣體中擊離，隨後，當這些電子回到原來的狀態或與大氣中的離子重新結合時，就會發出極光的光芒。
這幅插圖描繪了木星的壯觀磁層工作狀況。上個月發佈的內嵌圖像由地球軌道上的智慧X射線天文台（Chandra X-ray Observatory）拍攝，顯示木星極光發射出的意外強烈X射線光，並用假色紫色顯示。這張Chandra插圖疊加在哈勃太空望遠鏡（Hubble Space Telescope）在不同時間拍攝的光學圖像之上。這幅木星極光的影像拍攝於2011年10月，正好是太陽發射出強大的日冕物質拋出（CME）數天後的景象。
#木星 #極光 #宇宙 #太陽系 #哈勃 #Chandra #天文學 #科學探索 #壯觀景象 #日冕物質拋出
來源:NASA每日圖片
