sagalliant 发表于 2009-8-29 12:47

APOD 20090829 NGC 7771

来源:APOD

NGC 7771 Galaxy Group
Credit & Copyright: Kent Biggs Explanation: Slide your cursor over the image to identify three members of this intriguing gathering of galaxies. Known as the NGC 7771 Group, they lie almost 200 million light-years away toward the high flying constellation Pegasus. The largest galaxy, barred spiral NGC 7771, is itself about 75,000 light-years across, but will someday find itself part of a larger galaxy still. As the galaxies of the group make repeated close passages, they will finally merge into one very large galaxy. Played out over hundreds of millions of years, the process is understood to be a normal part of the evolution of galaxies, including our own Milky Way. Editor's Note: The labeled version of the image was generated by Astrometry.net.

Tianlovesky 发表于 2009-8-29 12:54

在人格上相互尊重，
在学问上相互欣赏。

aska8112 发表于 2009-8-29 13:15

我今天收到的桌面就是这张图::070821_01.jpg::

skyczheng 发表于 2009-8-29 13:20

期待汉化文本！

夜魂星 发表于 2009-8-29 19:31

::070821_01.jpg::看图翻译，

songlanchen 发表于 2009-8-30 13:10

::070821_01.jpg::不错不错。。。好看的图片
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