Clouds of glowing gas mingle with lanes of dark dust in the Trifid Nebula [ http://www.seds.org/messier/m/m020.html ], a star forming region toward the constellation [ http://www.att.virtualclassroom.org/vc99/vc_04/cons_stars/cons/hist_cons.html ] of Sagittarius [ http://www.astronomical.org/constellations/sgr.html ]. In the center, the three huge dark dust [ http://antwrp.gsfc.nasa.gov/apod/ap990509.html ] lanes that give the Trifid [ http://antwrp.gsfc.nasa.gov/apod/ap020424.html ] its name all come together. Mountains [ http://antwrp.gsfc.nasa.gov/apod/ap011230.html ] of opaque dust appear on the lower left, while filaments of dust are visible threaded throughout the nebula. A single massive star [ http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2001ApJ...562..446R ] visible near the center causes much of the Trifid's glow [ http://antwrp.gsfc.nasa.gov/apod/ap980828.html ]. The Trifid, also known as M20 [ http://www.astrocruise.com/m20.htm ], is only about 300,000 years old, making it among the youngest emission nebula [ http://antwrp.gsfc.nasa.gov/apod/emission_nebulae.html ] known. The nebula lies about 5000 light years [ http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html ] away and part pictured above spans about 20 light years. The above false-color digitally enhanced image [ http://www.gemini.edu/media/images_2002-10.html ] was taken with the Gemini North telescope [ http://antwrp.gsfc.nasa.gov/apod/ap990629.html ] earlier this month.