56.4 MB (6.7 MB compressed)
3646 x 5409 pixels
31.0 x 45.7 cm ⏐ 12.2 x 18.0 in (300dpi)
KIM GORDON / SCIENCE PHOTO LIBRARY KIM GORDON / SCIENCE PHOTO LIBRARY
Optical image of the Trifid Nebula (M20, NGC 6514) a cloud of gas and dust lying some 3000 light years away in the constellation of Sagittarius. The gas glows because it is lit up by ultraviolet radiation from a group of hot young stars lying within it.
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