本帖最后由 shinobii 于 2010-3-14 02:44 编辑
闲来无事，第一次翻译，略有删改，有错难免，敬请谅解（自己看懂和翻译还是有差距的。。。）
Astronomy Picture of the Day
来源 http://apod.nasa.gov/apod/ap100313.html
Centaurus A
Image Credit & Copyright: Tim Carruthers Explanation: Only 11 million light-years away, Centaurus A is the closest active galaxy to planet Earth. Spanning over 60,000 light-years, the peculiar elliptical galaxy, also known as NGC 5128, is featured in this sharp color image. Centaurus A is apparently the result of a collision of two otherwise normal galaxies resulting in a fantastic jumble of star clusters and imposing dark dust lanes. Near the galaxy's center, left over cosmic debris is steadily being consumed by a central black hole with a billion times the mass of the Sun. As in other active galaxies, that process likely generates the radio, X-ray, and gamma-ray energy radiated by Centaurus A.
半人马座A是离我们地球最近的活动星系（ps：拥有活躍星系核的星系叫做活动星系），只有1100万光年。在这张照片中拍摄的是半人马座A，也是我们所熟悉的NGC5128，一个独特的椭圆星系，跨度超过6万光年。它是由于两个不同的星系碰撞后所产生的奇怪的星系并伴有一个暗色尘埃带。在靠近星系中心的位置，相当于十亿太阳质量的宇宙残骸正在被被中心的黑洞所吞噬。就像其它活动星系一样，半人马A产生了大量的无线电波，X射线，伽马射线，以及能量辐射 |
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置顶卡
变色卡
千斤顶
显身卡
好漂亮啊 ，谢谢