August 10, 2024
The atoms in your body have known many forms: star core, drifting dust, ocean mineral, living cell.
The Light, Dark, and Dusty Trifid
Birthday · August 10, 2024
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APOD published August 10, 2024. Credit: Robert Edelmaier and Gabriele Gegenbauer. A publication-date match, not a photo taken on your date. Independent of NASA.
Messier 20, popularly known as the Trifid Nebula, lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid does illustrate three different types of astronomical nebulae; red emission nebulae dominated by light from hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette. The reddish emission region, roughly separated into three parts by obscuring dust lanes, is what lends the Trifid its popular name. The cosmic cloud complex is over 40 light-years across and would cover the area of a full moon on planet Earth's sky. But the Trifid Nebula is too faint to be seen by the unaided eye. Over 75 hours of image data captured under dark night skies was used to create this stunning telescopic view. Watch: The Perseid Meteor Shower
Image credit: Robert Edelmaier and Gabriele Gegenbauer