三星系的碰撞（大图）
本帖最后由 江涛 于 2009-3-12 14:50 编辑The three pictured galaxies -- NGC 7173 (middle left), NCG 7174 (middle right) and NGC 7176 (lower right) -- are part of the Hickson Compact Group 90, named after astronomer Paul Hickson, who first catalogued these small clusters of galaxies in the 1980s. NGC 7173 and NGC 7176 appear to be smooth, normal elliptical galaxies without much gas and dust. In stark contrast, NGC 7174 is a mangled spiral galaxy, barely clinging to independent existence as it is ripped apart by its close neighbours. The strong tidal interaction surging through the galaxies has dragged a significant number of stars away from their home galaxies. These stars are now spread out, forming a tenuous luminous component in the galaxy group.
版权所有：NASA, ESA and R. Sharples (University of Durham, U.K）
图片来源：http://www.universetoday.com/2009/03/03/hubble-watches-triple-galaxy-smash-up/trio-of-galaxies/
文字来源：http://spacespin.org/mediagallery/media.php?f=0&sort=0&s=20090303122329949 旁边还有那么多的小星系啊 2# 搜星星
那可不是旁边，那是遥远的背景，至少在10亿光年外吧。 翻译请参考
http://bootes.lamost.org/bbs/thread-106730-1-3.html
貌似版主此贴与我的帖子撞车呢。 4# gohomeman1
的确，那此贴就按版规做锁帖处理
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