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NGC 6357
NGC 6357 is a diffuse nebula near NGC 6334 in the constellation Scorpius. The nebula contains many proto-stars shielded by dark disks of gas, and young stars wrapped in expanding "cocoons" or expanding gases surrounding these small stars. It is also known as the Lobster Nebula〔〔http://www.space.com/19938-lobster-nebula-seen-with-esos-vista-telescope-space-wallpaper.html〕
This nebula was also given the name War and Peace Nebula by the Midcourse Space Experiment scientists because of its appearance. They said that in infrared images the bright, western part resembles a dove, while the eastern part looks like a skull.
==Pismis 24==
This nebula includes the open cluster Pismis 24, which is home to several massive stars. One of the brightest stars in the cluster, Pismis 24-1, was thought possibly to be the most massive on record, approaching 300 solar masses, until it was discovered to be a multiple system of at least three stars; component stars would still remain near 100 solar masses, making them among the more massive stars on record.〔(【引用サイトリンク】 url=http://www.spacetelescope.org/images/html/heic0619a.html )〕〔(NASA: Massive Stars in Open Cluster Pismis 24, 2006 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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