DAMIAN PEACH / SCIENCE PHOTO LIBRARY DAMIAN PEACH / SCIENCE PHOTO LIBRARY
Trifid Nebula (M20). This is an H II region emission nebula, a region of interstellar hydrogen that is being ionized by radiation from hot young stars. This nebulae is around 5400 light years from Earth in the constellation of Sagittarius. This image was obtained on 29 May 2014.
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