APOD Science APOD APOD: 2026 September 18 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss   APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Messier 33: The […]

Source: https://science.nasa.gov/image-article/apod-2026-september-18-messier-33-the-triangulum-galaxy/