{
  "id": 8167650,
  "title": "APOD: 2026 September 18 – Messier 33: The Triangulum Galaxy",
  "url": "https://urgent.news/2026/09/18/apod-2026-september-18-messier-33-the-triangulum-galaxy",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-18T04:05:00.000Z",
  "source": {
    "name": "NASA Science",
    "slug": "nasa-science",
    "url": "https://science.nasa.gov/image-article/apod-2026-september-18-messier-33-the-triangulum-galaxy/"
  },
  "original_language": "en",
  "account": "On September 18, 2026, the Astronomy Picture of the Day (APOD) featured a stunning image of Messier 33, also known as the Triangulum Galaxy. This face-on spiral galaxy resides in the small, northern constellation Triangulum and boasts a diameter of over 50,000 light-years, making it the third largest galaxy in the Local Group, after the Andromeda Galaxy (M31) and our Milky Way. Located approximately 3 million light-years from the Milky Way, M33 is believed to be a satellite of the Andromeda Galaxy, offering both galaxies a breathtaking view of each other's grand spiral star systems.\n\nThe APOD image showcases M33's vibrant blue star clusters and pinkish star-forming regions along its loosely wound spiral arms. Within this cosmic wonder, the cavernous NGC 604 stands out as the brightest star-forming region, situated at about the 5 o'clock position from the galaxy center. Similar to its larger counterpart, the Andromeda Galaxy, M33's population of variable stars has aided astronomers in establishing a cosmic yardstick for measuring the distance scale of the Universe.",
  "summary": "The post APOD: 2026 September 18 – Messier 33: The Triangulum Galaxy appeared first on NASA Science .",
  "key_points": [
    "Astronomy Picture of the Day on September 18, 2026, showcased Messier 33",
    "Triangulum Galaxy, also known as M33, featured in APOD image",
    "M33's brightest star-forming region, NGC 604, located at 5 o'clock position"
  ],
  "editors_take": "The stunning image of Messier 33 reveals its significance as a satellite galaxy to Andromeda, offering insights into the Local Group's structure and aiding astronomers in measuring the Universe's distance scale.",
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "NASA",
        "title": "APOD: 2026 September 18 – Messier 33: The Triangulum Galaxy",
        "url": "https://urgent.news/2026/09/18/apod-2026-september-18-messier-33-the-triangulum-galaxy-8174185",
        "published": "2026-09-18T04:05:00.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}