珠光宝气

转自:http://hubblesite.org/newscenter ... es/2008/25/image/a/


ABOUT THIS IMAGE:
In studying the dimmest burned-out stars in globular star cluster NGC 6791, NASA's Hubble Space Telescope has uncovered a paradox: three different populations of stars exist in an object where all the stars should have formed at the same time out of an interstellar cloud of gas and dust.


[Left] — This is a ground-based telescopic view of NGC 6791, located 13,300 light-years away in the constellation Lyra. The green inset box shows the view with Hubble's Advanced Camera for Surveys.


[Top right] — The full Hubble Advanced Camera for Surveys field is full of stars estimated to be 8 billion years old. Two background galaxies can be seen at upper left.


[Bottom right] — A blow up of view of a small region of the Advanced Camera for Surveys field reveals very faint white dwarfs. The blue circles identify hotter dwarfs that are 4 billion years old. The red circles identify cooler dwarfs that are 6 billion years old.


Object Name: NGC 6791

Image Type: Astronomical/Illustration

Credit: NASA, ESA, Digitized Sky Survey, and L. Bedin (STScI)




^_^为方便大家打开观看，就不上大图了。想看大图可以下载，注:分卷压缩，需全部下载方可解压。

[ 本帖最后由 寻找拉玛 于 2008-7-12 12:46 编辑 ]

转自:http://hubblesite.org/newscenter ... es/2008/25/image/c/




^_^为方便大家打开观看，就不上大图了。想看大图可以下载，注:分卷压缩，需全部下载方可解压。这张大图很精彩哦。

[ 本帖最后由 寻找拉玛 于 2008-7-12 12:50 编辑 ]

的确如楼主所言

收藏了

已经做桌面了，谢啦

额,,,太美了....
震撼！