NASA Astronomy Picture of the Day Spotlights the Triangulum Galaxy

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NASA's Astronomy Picture of the Day (APOD) for September 18, 2026, features Messier 33, commonly known as the Triangulum Galaxy. APOD is a long-running NASA initiative that publishes a daily image or photograph of the universe, accompanied by an explanation from a professional astronomer. Messier 33 is a spiral galaxy located in the constellation Triangulum and is one of the closest galaxies to the Milky Way. The feature is part of APOD's ongoing mission to make astronomy accessible and engaging to the general public.

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