?氣泡星云 這個巨大的太空泡沫正在由一顆巨大的恒星吹散，該恒星在其10點鐘位置可見。已經超過7光年，并且以超過400萬英里/小時的速度膨脹，實際上，當膨脹的熱氣體（或恒星風）撞擊周圍的冷星際氣體時產生的沖擊波，氣泡星云由威廉·赫歇爾于1787年發(fā)現，里面的恒星活得很快，并且會年輕時死亡（對于恒星而言） —它很可能僅在10到2000萬年內就會爆炸成超新星。這張照片是由哈勃太空望遠鏡于2016年拍攝的，以紀念哈勃望遠鏡由STS-31航天飛機乘員進入地球軌道26周年。將其顯示為紀念世界太空周的最后一天，這是一年一度的“國際科學技術慶?；顒樱约八鼈儗Ω纳迫祟悹顩r的貢獻”。

英語原文:

This giant space bubble is being blown by a massive star visible at the 10 o'clock position inside it. Already over 7 light-years across and expanding at a rate of over 4 million mph, the 'bubble' is actually the shock wave created when expanding hot gas (or stellar wind) hits the cold, interstellar gas that surrounds it. The Bubble nebula was discovered in 1787 by William Herschel. The star inside is living fast and will die young (for a star)—it will likely detonate as a supernova in only 10 to 20 million years. This image was taken in 2016 by the Hubble Space Telescope to mark the 26th anniversary of Hubble's launch into Earth orbit by the STS-31 space shuttle crew. We're showing it to mark the last day of World Space Week, an annual 'international celebration of science and technology, and their contribution to the betterment of the human condition.'

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