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Trifid Nebula

Ha OIII OIII The red emission nebula with its young star cluster near its center is about 2000 to 9000 light years away from Earth in the constellation Sagittarius.
( The Sky Catalog 2000 gives 5,200 light years, Hubble Press Release of Jeff Hester (STScI-PRC99-42)gives "about 9000" light years.)