Astronomy Picture of the Day——礁湖星云中央附近
Near the Center of the Lagoon Nebula
Image Credit & Copyright: Zhuoqun Wu, Chilescope
Explanation: Stars are battling gas and dust in the Lagoon Nebula but the photographers are winning. Also known as M8, this photogenic nebula is visible even without binoculars towards the constellation of the Archer (Sagittarius). The energetic processes of star formation create not only the colors but the chaos. The glowing gas results from high-energy starlight striking interstellar hydrogen gas and trace amounts of sulfur, and oxygen gases. The dark dust filaments that lace M8 were created in the atmospheres of cool giant starsand in the debris from supernovae explosions. The light from M8 we see today left about 5,000 years ago. Light takes about 50 years to cross this section of M8.
礁湖星云中央附近
恒星正在与礁湖星云内的气体以及尘埃作斗争,但最终获胜的是摄影师。这个上镜的星云也被称为M8,我们甚至无需使用望远镜就能在人马座方向看到它。恒星形成的活跃过程不仅产生了多样的色彩,而且还引起了混乱。这些炽热的气体是由高能星光激发的星际间的氢气、微量的硫和氧所产生的。M8周围的黑暗丝状尘埃带形成于冰冷巨星的大气层和超新星爆炸的残骸中。今天我们看到来自M8的辉光则是它在约5000年前发出的。而光需要花费约50年时间才能穿越M8的这片区域。
高清原图地址:
https://apod.nasa.gov/apod/image/1911/M8_Wu_966.jpg
近期文章:
Astronomy Picture of the Day——地球的蓝色时刻
Astronomy Picture of the Day——星际空间的地球
Astronomy Picture of the Day——飞掠火星后的第二天
NASA
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