APOD090731：哈勃拍摄的木星新撞击痕
今天的APOD再次登场木星的那个新撞击痕，但没有新图。此图是哈勃的WFC3拍摄的。http://apod.nasa.gov/apod/ap090731.html
2009 July 31
Hubble View: Jupiter Impact
http://apod.nasa.gov/apod/image/0907/jupimpact_hubble800.jpg
Credit: NASA, ESA, H. Hammel (Space Science Institute, Boulder, Co.), and the Jupiter Impact Team
Explanation:
This sprawling dark marking is Jupiter's latest impact scar, a debris plume created as a small asteroid or comet disintegrated after plunging into the gas giant's atmosphere. Located in Jupiter's south polar region, the new feature was discovered by Australian amateur astronomer Anthony Wesley on July 19. On July 23rd Wesley's discovery was followed up by the Hubble Space Telescope with its newly installed Wide Field Camera 3, creating this sharpest view of the evolving debris plume. Estimates indicate that the impacting object itself was several hundred meters across. Similar impact markings were created when pieces of Comet Shoemaker-Levy 9 slammed into Jupiter's cloud bands in July of 1994. 在北京天文馆已经翻译好的情形下，我给出他们的翻译，同时给出今天的大图。
http://www.bjp.org.cn/apod/today.htm
哈勃视野：木星撞击
http://www.bjp.org.cn/files/2009-07/31/F_a6f0c66f3c3f488e8a4bc5456f699511_jupimpact_hubble1.jpg
影像提供：NASA, ESA, H. Hammel (Space Science Institute, Boulder, Co.), and the Jupiter Impact Team
说明：
这个巨大的黑色标记是木星最新的撞击伤疤，当一颗小新星或者彗星在进入气态巨行星的大气层之后开始分解，从而形成了碎片羽状烟柱。这一新形成的特征位于木星南极附近，由澳大利亚业余天文学家安东尼.韦斯利在7月19日发现。7月23日，韦斯利的发现被新安装在哈勃太空望远镜上的第三代广域照相机跟踪到，并对演变中的碎片烟柱拍摄了迄今最清晰的影像。据估计碰撞的天体本身有数百米宽。1994年7月当苏梅克-列维九号彗星猛烈撞击木星云带时也形成了类似的撞击痕迹。 本帖我发了专题帖的
http://www.astronomy.com.cn/bbs/thread-116103-1-2.html
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