--- title: Scientists Observe Rare Supermassive Black Hole Double Belch description: Scientists studying a supermassive black hole say they caught it 'belching' - blasting out jets of bright light - after ingesting hot gas. canonical: https://time.com/5100497/supermassive-black-hole-double-belch/ author: Kate Samuelson article:opinion: false article:content_tier: free article:published_time: 2018-01-12T13:44:12.000Z article:modified_time: 2026-03-31T11:27:38.920Z article:section: Science og:title: Scientists Observe Rare Supermassive Black Hole 'Double Belch' og:description: The action has rarely been observed before og:url: https://time.com/5100497/supermassive-black-hole-double-belch/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltb7b07f66a3fa12ce/6988f80ce76ad223676309a4/black-hole.jpg?branch=production&width=982&quality=75&auto=webp&crop=16:9 og:image:width: 982 og:image:height: 552 og:image:alt: Illustration of the supermassive black hole at the center of the Milky Way galaxy. og:type: article twitter:card: summary_large_image twitter:title: Scientists Observe Rare Supermassive Black Hole 'Double Belch' twitter:description: The action has rarely been observed before twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltb7b07f66a3fa12ce/6988f80ce76ad223676309a4/black-hole.jpg?branch=production&width=982&quality=75&auto=webp&crop=16:9 ---  # Scientists Observe Rare Supermassive Black Hole 'Double Belch' > Sponsored content. 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It reaches 40,000 subscribers with a 34.2% open rate and a 2.1% click rate as of August 2026. #### Where can I follow the energy transition as a business story? Future Proof covers climate and energy as an economic and business story rather than only an environmental one. It publishes every Friday and is free at time.com/newsletters. #### Who writes Future Proof? Justin Worland, a senior correspondent at TIME and an award-winning climate journalist, writes Future Proof. #### Is Future Proof free? Yes. Future Proof is free at time.com/newsletters. by [Kate Samuelson](https://time.com/author/kate-samuelson/) ## Kate Samuelson Jan 12, 2018 1:44 PM UTC  A new study provides a possible explanation of mysterious X-ray flares detected by Chandra over the period of several years. It suggests that there is a cloud around Sgr A\* containing trillions of asteroids and comets, stripped from their parent stars. The flares occur when asteroids of six miles or larger in radius are consumed by the black hole. The panel on the left shows a very long Chandra observation of the region around the Sgr A\*, while the three panels on the right are artist's impressions of the path that a doomed asteroid would take on its way to the black hole. A new study provides a possible explanation of mysterious X-ray flares detected by Chandra over the period of several years. It suggests that there is a cloud around Sgr A\* containing trillions of asteroids and comets, stripped from their parent stars. The flares occur when asteroids of six miles or larger in radius are consumed by the black hole. The panel on the left shows a very long Chandra observation of the region around the Sgr A\*, while the three panels on the right are artist's impressions of the path that a doomed asteroid would take on its way to the black hole. NASA—Corbis via Getty Images by [Kate Samuelson](https://time.com/author/kate-samuelson/) ## Kate Samuelson Jan 12, 2018 1:44 PM UTC Scientists studying a [supermassive black hole](http://time.com/4926630/milky-way-black-hole/) around 800 million light-years from Earth say they caught it ‘belching’ — blasting out jets of bright light — after ingesting hot gas. The team, led by University of Colorado Boulder researchers, was fortunate to catch the black hole in the act, as the action has rarely been seen before as a result of gas feeding. They also saw a remnant of a previous black hole belch, which occurred around 100,000 years before the second. The Hubble Space Telescope and the Chandra X-ray Observatory, along with observatories in Hawaii and New Mexico, were used to make the observation. “Black holes are voracious eaters, but it also turns out they don’t have very good table manners,” said the study’s lead author, CU Boulder Assistant Professor Julie Comerford, during a news conference on Jan. 11, [according to Space.com.](https://www.space.com/39361-monster-black-hole-messy-double-burp.html) “We know a lot of examples of black holes with single burps emanating out, but we discovered a galaxy with a supermassive black hole that has not one but two burps.” The team presented its rare findings in a paper published in [_The_ _Astrophysical Journal_](https://arxiv.org/abs/1710.00825). ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5100497/supermassive-black-hole-double-belch/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5100497/supermassive-black-hole-double-belch/"},"headline":"Scientists Observe Rare Supermassive Black Hole 'Double Belch'","datePublished":"2018-01-12T13:44:12.000Z","dateModified":"2026-03-31T11:27:38.920Z","description":"The action has rarely been observed before","url":"https://time.com/5100497/supermassive-black-hole-double-belch/","keywords":["Space","onetime"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltb7b07f66a3fa12ce/6988f80ce76ad223676309a4/black-hole.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Kate Samuelson","jobTitle":"","url":"https://time.com/author/kate-samuelson/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltb7b07f66a3fa12ce/6988f80ce76ad223676309a4/black-hole.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Illustration of the supermassive black hole at the center of the Milky Way galaxy.","caption":"Illustration of the supermassive black hole at the center of the Milky Way galaxy.","creditText":"NASA—Corbis via Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/space/","name":"Space"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/5100497/supermassive-black-hole-double-belch/","name":"Scientists Observe Rare Supermassive Black Hole 'Double Belch'"}}]}] ```