... A Spectacular Sky Over the Grand Tetons . ... The Trifid Nebula in Stars and Dust . ... The red-glowing gas results from high-energy starlight striking interstellar hydrogen gas. ... Star Factory Messier 17 . ... Gathered at the center of this sharp skyview are the stars of Messier 67, one of the oldest known open star clusters. ... CG4: A Ruptured Cometary Globule . ... The odd looking "creature" or "hand" extending down from the top of the above photo is a gas cloud known as a cometary globule. ...