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原文:
Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape. Cataloged as NGC 7635, it is also known simply as The Bubble Nebula. Although it looks delicate, the 7 light-year diameter bubble offers evidence of violent processes at work. Above and left of the Bubble’s center is a hot, O-type star, several hundred thousand times more luminous and around 45 times more massive than the Sun. A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The intriguing Bubble Nebula and associated cloud complex lie a mere 7,100 light-years away toward the boastful constellation Cassiopeia. This sharp, tantalizing view of the cosmic bubble is a composite of Hubble Space Telescope image data from 2016, released to celebrate the 26th anniversary of Hubble’s launch. Celebrate: Planet Earth Day
中文翻譯:
🌌 被一顆大質量星體的風推動，這個星際奇觀有著令人驚訝的熟悉形狀。被編號為 NGC 7635，它也簡單地被稱為「氣泡星雲」(The Bubble Nebula)。儘管它看起來脆弱，這個直徑達 7 光年的氣泡卻證明了在裡面有著劇烈的過程正在進行。在氣泡的中心上方和左側，是一顆熱的 O 型星，亮度是太陽的幾十萬倍，質量約為太陽的 45 倍。這顆星的強烈恆星風和猛烈輻射已經把發光氣體的結構轟出來，對抗周圍分子雲中的更密集的物質。這個引人入勝的氣泡星雲及相關雲層複合體距離我們僅有 7,100 光年，位於傲慢的仙后座星座。這幅清晰而誘人的宇宙氣泡圖像是來自哈勃太空望遠鏡 2016 年的圖像數據，發布來慶祝哈勃發射的 26 周年紀念。
🌍 慶祝：地球日 (Earth Day)
#BubbleNebula #NGC7635 #HubbleSpaceTelescope #EarthDay #Cassiopeia #宇宙奇觀 #太空探索 #星際 #天文學 #科學分享
來源:NASA每日圖片
