Star Forming Region S106 . ... Credit Copyright: CISCO , Subaru 8.3-m Telescope , NAOJ Explanation: Massive star IRS4 is beginning to spread its wings. Born only about 100,000 years ago, material streaming out from this newborn star has formed the nebula dubbed Sharpless 106 Nebula (S106), pictured above . ... S106 gas near IRS4 acts as an emission nebula as it emits light after being ionized , while dust far from IRS4 reflects light from the central star and so acts as a reflection nebula. ...