Copyright:Alessandro Cipolat Bares
中文翻譯:
在浩瀚的宇宙中，有一個美麗的星雲被稱為Trifid Nebula，也叫做M20。這個星雲距離地球約5,000光年，位於星星很多的射手座裡。Trifid星雲是一個新星形成的區域，裡面有三種不同的星雲。我們可以看到紅色的發射星雲，它的光來自氫原子；還有藍色的反射星雲，它是由塵埃反射星星的光；最後是黑色的暗星雲，像個黑影一樣。尤其是那個紅色的發射區，因為被遮擋的塵埃帶有三個部分，所以給了Trifid這個有趣的名字。星雲中，有一些小星星剛剛出生，它們像雕刻家一樣，將周圍的氣體和塵埃雕刻成特殊的形狀。在Hubble太空望遠鏡拍到的圖片中，我們可以看到這些美麗的形狀。Trifid星雲大約有40光年寬，對於我們的肉眼來說，它太微弱了，但是在望遠鏡下，它幾乎占滿了整個月亮的面積，真是太神奇了！
原文:
The beautiful Trifid Nebula is a cosmic study in contrasts. Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid does illustrate three different types of astronomical nebulae; red emission nebulae dominated by light from hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette. But, the red emission region roughly separated into three parts by obscuring dust lanes is what lends the Trifid its popular name. Pillars and jets sculpted by newborn stars, above and right of the emission nebula’s center, appear in famous Hubble Space Telescope close-up images of the region. The Trifid Nebula is about 40 light-years across. Too faint to be seen by the unaided eye, in this deep telescopic view it almost covers the area of a full moon on planet Earth’s sky.
來源:NASA每日圖片
