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Trifid Nebula

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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.)