Copyright:
Alan Chen
中文翻譯:
在遙遠的宇宙中，當一顆星星爆炸時，會留下許多神秘的雲朵。這就是被稱為Crab Nebula（螃蟹星雲）的地方。它是在公元1054年看到的一次超新星爆炸後形成的，裡面充滿了許多奇妙的絲狀結構。這些結構看起來不僅複雜，還似乎比最初超新星爆炸時釋放的物質少，速度卻比我們想像的快。最近，一位業餘天文學家在美國佛羅里達州的Leesburg，用三天的時間拍攝了這幅美麗的宇宙圖片。在這張照片中，雖然用的是三種主要顏色，但還能看見氫氣發出的特殊光芒，讓整個星雲的細節更加豐富。螃蟹星雲大約有10光年那麼大。在星雲的中央，有一顆叫做Crab Pulsar（螃蟹脈衝星）的星星。這顆星星的質量和太陽一樣大，但它的大小卻和一個小鎮差不多，除此之外，螃蟹脈衝星每秒鐘可以轉動30次呢！
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 was taken by an amateur astronomer in Leesburg, Florida, USA over three nights last month. It was captured in three primary colors but with extra detail provided by specific emission by hydrogen gas. 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. Explore the Universe: Random APOD Generator
來源:NASA每日圖片
