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原文:
Like a pearl, a white dwarf star shines best after being freed from its shell. In this analogy, however, the Sun would be a mollusk and its discarded hull would shine prettiest of all! In the above shell of gas and dust, the planetary nebula designated NGC 2440, contains one of the hottest white dwarf stars known. The glowing stellar pearl can be seen as the bright dot near the image center. The portion of NGC 2440 shown spans about one light year. The center of our Sun will eventually become a white dwarf, but not for another five billion years. The above false color image was captured by the Hubble Space Telescope in 1995. NGC 2440 lies about 4,000 light years distant toward the southern constellation Puppis.
中文翻譯:
如同珍珠般，白矮星在脫離其外殼後閃耀得最為明亮。在這個比喻中，太陽則可視為一個貝殼，其被丟棄的外殼卻閃耀得更加美麗！在這團氣體和塵埃的殼中，行星狀星雲NGC 2440包含了已知最熱的白矮星之一。這顆閃亮的恆星珍珠可以在圖像中央的亮點看到。圖中顯示的NGC 2440範圍約為一光年。我們的太陽中心最終也會變成一顆白矮星，但還需要五十億年。這張偽色圖像是由哈勃太空望遠鏡於1995年拍攝的。NGC 2440位於距離地球約4000光年的位置，朝向南天的星座Puppis。
#白矮星 #NGC2440 #哈勃太空望遠鏡 #行星狀星雲 #宇宙奇觀 #珍珠般的恆星 #太陽的未來 #天文學 #星際旅行 #天文愛好者
來源:NASA每日圖片
