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原文:
This is the mess that is left when a star explodes. The Crab Nebula, the result of a supernova seen in 1054 AD, is filled with mysterious filaments. The filaments are not only tremendously complex, but appear to have less mass than expelled in the original supernova and a higher speed than expected from a free explosion. The featured image, taken by the Hubble Space Telescope, is presented in three colors chosen for scientific interest. The Crab Nebula spans about 10 light-years. In the nebula’s very center lies a pulsar: a neutron star as massive as the Sun but with only the size of a small town. The Crab Pulsar rotates about 30 times each second. Students (of all ages): See free astronomy lectures online
中文翻譯:
這是星星爆炸後留下的混亂。蟹狀星雲（Crab Nebula），亦即1054年所見的超新星的結果，裡面充滿了神秘的絲狀結構。這些絲狀結構不僅非常複雜，還顯示出比原來超新星爆炸所排放的質量更少，且速度比預期的自由爆炸速度還要快。這張圖像是由哈勃太空望遠鏡（Hubble Space Telescope）拍攝，采用了三種代表科學興趣的顏色。蟹狀星雲的直徑約為10光年。在星雲的核心，躺著一顆脈衝星（Pulsar）：這顆中子星（neutron star）和太陽一樣大，卻只有一個小鎮的大小。蟹脈衝星每秒旋轉約30次。
#蟹狀星雲 #CrabNebula #超新星 #星際探索 #哈勃太空望遠鏡 #Pulsar #天文學 #宇宙 #神秘宇宙 #科學探索 #天文講座
來源:NASA每日圖片
