Labels:bulletin board | encyclical | fence | pier | pole | sea | sidewalk | sky | skyscraper | water OCR: THTE ation young hot stars produ ium that causes hydrogen gases clouds to glow. The ne ent are pushed outward ET shock frorm radia pressure and stellar wi lanes dust and gas di the nebula into three parts name) Note that the Nebula may be part of ludes larger forna ation that MS. The tlue of the and another nebula Altho the Trifid Nebula frequ appear together in pho ted. they are physically une Dust i surrounding this scatters the light from uushed shocl wave fron radis fornation blue freqi tocether licht