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--> |dist_ly = 1,300 |dist_pc = |appmag_v = |constellation = Puppis |age = |notes = 1.5 light-years in diameter (head) and 8 light-years long (tail) |names = God's Hand }} CG4 is a star-forming region located in the Puppis constellation, which is about 1,300 light-years away from earth.〔(【引用サイトリンク】 title=NOAO )〕 Commonly referred to as God's Hand, it is about 1,300 light years from Earth with its head about 1.5 light-years in diameter, and its tail about eight light-years long.〔(【引用サイトリンク】 title=Sci-news )〕 It is a cometary globule, one side of which has been blown outwards into a long tail, resembling a comet and hence named so. CG4, and the nearby cometary globules, generally point away from the supernova remnant of Vela, located at the center of the Gum Nebula.〔(【引用サイトリンク】 title=D News )〕 == Discovery == In 1976, photographs from the Schmidt Telescope—operated by the Australian Astronomical Observatory—showed several objects resembling comets, located in the Gum Nebula, an emission nebula of the constellation. Due to their particular shape, these objects came to be known as cometary globules. Each globule has a dense, dark, ruptured head and a very long tail, with the latter pointing away from the Vela supernova remnant. As a part of the ESO Cosmic Gems program, European Southern Observatory released an image of CG4 in January 2015 showing the head of the nebula.〔(【引用サイトリンク】 title=ESO )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CG 4」の詳細全文を読む スポンサード リンク
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