--- title: The Flame Nebula's Star Clusters Hold the Mysteries of Star Formation description: Old stars are actually on the outskirts of clouds like this one, while the babies stay in the middle canonical: https://time.com/91066/flame-nebula-star-cluster-orion-chandra/ author: Sam Frizell article:opinion: false article:content_tier: free article:published_time: 2014-05-07T17:27:17.000Z article:modified_time: 2026-02-21T07:42:19.759Z article:section: Science og:title: Brilliant Star Clusters in the Flame Nebula Hold the Mysteries of Star Formation og:description: Old stars are actually on the outskirts of clouds like this one, while the babies stay in the middle og:url: https://time.com/91066/flame-nebula-star-cluster-orion-chandra/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltef45ca4507c8ec0d/69868e40e8524b8350602c14/flame-nebula-chandra-telescope-nasa-space.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 3600 og:image:height: 2025 og:image:alt: This composite image released by NASA on May 7, 2014 shows NGC 2024, which is found in the center of the so-called Flame Nebula about 1,400 light years from Earth. og:type: article twitter:card: summary_large_image twitter:title: Brilliant Star Clusters in the Flame Nebula Hold the Mysteries of Star Formation twitter:description: Old stars are actually on the outskirts of clouds like this one, while the babies stay in the middle twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltef45ca4507c8ec0d/69868e40e8524b8350602c14/flame-nebula-chandra-telescope-nasa-space.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Brilliant Star Clusters in the Flame Nebula Hold the Mysteries of Star Formation > Sponsored content. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=cfe519a8-5347-4388-a8a5-03cee6f62990&cr=time-nl-network-2026q3-v1) by [Sam Frizell](https://time.com/author/sam-frizell/) ## Sam Frizell May 7, 2014 5:27 PM UTC  This composite image released by NASA on May 7, 2014 shows NGC 2024, which is found in the center of the so-called Flame Nebula about 1,400 light years from Earth. In this image, X-rays from Chandra are seen as purple, while infrared data from NASA's Spitzer Space Telescope are colored red, green, and blue. This composite image released by NASA on May 7, 2014 shows NGC 2024, which is found in the center of the so-called Flame Nebula about 1,400 light years from Earth. In this image, X-rays from Chandra are seen as purple, while infrared data from NASA's Spitzer Space Telescope are colored red, green, and blue. X-ray: NASA/CXC/PSU/K.Getman, E.Feigelson, M.Kuhn & the MYStIX team; Infrared:NASA/JPL-Caltech by [Sam Frizell](https://time.com/author/sam-frizell/) ## Sam Frizell May 7, 2014 5:27 PM UTC How are stars formed? Astronomers get to spend years looking at beautiful star clusters like this one to try to find out. Scientists are [rethinking notions](http://chandra.si.edu/photo/2014/flame/) about how giant clouds of gas, dust and stars are formed, after observing two stunning star clusters, NGC 2024 and the Orion Nebula Cluster, where many new stars are forming. Using infrared telescopes and NASA’s Chandra X-ray Observatory, astronomers have found that the oldest stars in clusters are on the outside, rather than in the middle, as earlier models indicated. That could upend theories about how star clusters coalesce and behave, as well as models of how stars are formed. The star cluster pictured here is the NGC 2024 in the so-called Flame Nebula, about 1,400 light years from Earth. 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