🕷️ Crawler Inspector

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Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 84 (from laksa155)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa084.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.nytimes.com/interactive/2019/04/10/science/event-horizon-black-hole-images.html\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.nytimes.com/interactive/2019/04/10/science/event-horizon-black-hole-images.html\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.nytimes.com\/interactive\/2019\/04\/10\/science\/event-horizon-black-hole-images.html","crawl_time":1773630776,"first_indexed_time":1554904552,"http_code":200,"src_unparsed":"com,nytimes!www,\/interactive\/2019\/04\/10\/science\/event-horizon-black-hole-images.html s443","src_root_hash":"4566504020376537684","history_drop_reason":null,"meta_title":"How They Took the First Picture of a Black Hole - The New York Times","meta_descriptions":["A planet-sized network of radio telescopes has assembled the first image of a black hole."],"attrs_boilerpipe_text":"At the center of our galaxy lies Sagittarius A*, a black hole as massive as four million suns:\nThe black hole is obscured by thick dust and a bright haze of superheated gases.\nAn elusive target\nA network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole.\nAfter\nyears of analyzing data\n, the team did not release an image of Sagittarius A* on Wednesday. But it did catch a glimpse of something else.\nA giant in Messier 87\nAn even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87.\nNASA, ESA and the Hubble Heritage Team\nThe black hole is spewing a jet of subatomic particles thousands of light years into space.\nNASA and the Hubble Heritage Team\nOn Wednesday, astronomers from the Event Horizon Telescope\nreleased the first image\nof the M87 supermassive black hole:\nYears in the making\nThe jet of particles streaming from M87\nwas discovered in 1918\n, and radio waves emanating from the center of our galaxy\nwere first detected in 1931\n.\nMore recently, astronomers have\ndetected gravitational waves\nfrom colliding black holes and have tracked distant stars swinging past Sagittarius A*:\nThe Event Horizon Telescope\nEight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017.\nThe network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole.\nFor more about the Event Horizon Telescope, watch a video preview of the experiment from 2015:\nBackground image by NASA\/JPL-Caltech\/Susan Stolovy.","attrs_markdown":"NYTimes.com no longer supports Internet Explorer 9 or earlier. Please upgrade your browser. [LEARN MORE »](http:\/\/www.nytimes.com\/content\/help\/site\/ie9-support.html)\n\nSections\n\nHome\n\nSearch\n\n## [The New York Times ![The New York Times](https:\/\/www.nytimes.com\/vi-assets\/static-assets\/nyt5\/decom-userinfo\/images\/foundation\/logos\/nyt-logo-163x30.png)](https:\/\/www.nytimes.com\/)\n### [Science](https:\/\/www.nytimes.com\/section\/science)\n###### [Science](https:\/\/www.nytimes.com\/section\/science)  \\|How They Took the First Picture of a Black Hole\n- [Share]()\n- [Tweet]()\n- [Email]()\n- [Share]()\n- [Save]()\n\nClose search\n\n## Site Search Navigation\n\n<https:\/\/nyti.ms\/2UNkPmI>\n\n## Site Navigation\n- [Home Page](https:\/\/www.nytimes.com\/)\n- [World](https:\/\/www.nytimes.com\/section\/world)\n- [U.S.](https:\/\/www.nytimes.com\/section\/us)\n- [Politics](https:\/\/www.nytimes.com\/section\/politics)\n- [N.Y.](https:\/\/www.nytimes.com\/section\/nyregion)\n- [Business](https:\/\/www.nytimes.com\/section\/business)\n- [Business](https:\/\/www.nytimes.com\/section\/business)\n- [Opinion](https:\/\/www.nytimes.com\/section\/opinion)\n- [Opinion](https:\/\/www.nytimes.com\/section\/opinion)\n- [Tech](https:\/\/www.nytimes.com\/section\/technology)\n- [Science](https:\/\/www.nytimes.com\/section\/science)\n- [Health](https:\/\/www.nytimes.com\/section\/health)\n- [Sports](https:\/\/www.nytimes.com\/section\/sports)\n- [Sports](https:\/\/www.nytimes.com\/section\/sports)\n\n- [Arts](https:\/\/www.nytimes.com\/section\/arts)\n- [Arts](https:\/\/www.nytimes.com\/section\/arts)\n- [Books](https:\/\/www.nytimes.com\/section\/books)\n- [Style](https:\/\/www.nytimes.com\/section\/style)\n- [Style](https:\/\/www.nytimes.com\/section\/style)\n- [Food](https:\/\/www.nytimes.com\/section\/food)\n- [Food](https:\/\/www.nytimes.com\/section\/food)\n- [Travel](https:\/\/www.nytimes.com\/section\/travel)\n- [Magazine](https:\/\/www.nytimes.com\/section\/magazine)\n- [T Magazine](https:\/\/www.nytimes.com\/section\/t-magazine)\n- [Real Estate](https:\/\/www.nytimes.com\/section\/realestate)\n- [Obituaries](https:\/\/www.nytimes.com\/section\/obituaries)\n- [Video](https:\/\/www.nytimes.com\/video)\n- [The Upshot](https:\/\/www.nytimes.com\/section\/upshot)\n- [Reader Center](https:\/\/www.nytimes.com\/section\/reader-center)\n- [Conferences]()\n\n- [Crossword](https:\/\/www.nytimes.com\/crosswords)\n- [Times Insider](https:\/\/www.nytimes.com\/section\/reader-center)\n- [Newsletters](https:\/\/www.nytimes.com\/newsletters)\n- [The Learning Network](https:\/\/www.nytimes.com\/section\/learning)\n\n- [Multimedia](https:\/\/www.nytimes.com\/section\/multimedia)\n- [Photography](https:\/\/www.nytimes.com\/section\/lens)\n- [Podcasts](https:\/\/www.nytimes.com\/spotlight\/podcasts)\n\n- [NYT Store](https:\/\/store.nytimes.com\/?action=click&contentCollection=NYT%20Store&contentPlacement=2&module=SectionsNav&pgtype=Homepage&region=TopBar&t=qry542&utm_campaign=NYT-HP&utm_content=hp_browsetree&utm_medium=HPB&utm_source=nytimes&version=BrowseTree)\n- [NYT Wine Club](http:\/\/www.nytwineclub.com\/)\n- [nytEducation](http:\/\/nytedu.com\/)\n- [Times Journeys](https:\/\/www.nytimes.com\/times-journeys\/?utm_source=nytimes&utm_medium=HPLink&utm_content=hp_browsetree&utm_campaign=NYT-HP&module=SectionsNav&action=click&region=TopBar&version=BrowseTree&contentCollection=Times%20Journeys&contentPlacement=2&pgtype=Homepage)\n- [Meal Kits](https:\/\/www.chefd.com\/pages\/new-york-times-cooking-meal-plan?utm_campaign=web1_20160617&utm_medium=partner&utm_source=nyt)\n\n- [Subscribe](https:\/\/www.nytimes.com\/seeallnav)\n- [Manage Account](https:\/\/account.nytimes.com\/)\n- [Today's Paper](https:\/\/www.nytimes.com\/section\/todayspaper)\n- [Tools & Services](https:\/\/www.nytimes.com\/marketing\/tools-and-services\/)\n- [Jobs](https:\/\/www.nytimes.com\/section\/jobs)\n- [Classifieds](https:\/\/www.nytimes.com\/ref\/classifieds\/)\n- [Corrections](https:\/\/www.nytimes.com\/section\/corrections)\n\n- [More]()\n## Site Mobile Navigation\n# How They Took the First Picture of a Black Hole\nBy JONATHAN CORUM  APRIL 10, 2019\n\nA planet-sized network of radio telescopes has assembled the first image of a supermassive black hole.\n\n## The dark heart of the Milky Way\nAt the center of our galaxy lies Sagittarius A\\*, a black hole as massive as four million suns:\n\nThe black hole is obscured by thick dust and a bright haze of superheated gases.\n\n## An elusive target\nA network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole.\n\nAfter [years of analyzing data](https:\/\/www.nytimes.com\/2019\/04\/08\/science\/black-hole-photo.html), the team did not release an image of Sagittarius A\\* on Wednesday. But it did catch a glimpse of something else.\n\n## A giant in Messier 87\nAn even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87.\n\n![](data:image\/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==)\n\nMessier 87\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/1d83d85cdd0c4cc19190d01a0106ca1907d1d0f6\/m87-720.jpg)\n\nMessier 87\n\n![](data:image\/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==)\n\nMessier 87\n\nNASA, ESA and the Hubble Heritage Team\n\nThe black hole is spewing a jet of subatomic particles thousands of light years into space.\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/m87-jet-1050.jpg)\n\nNASA and the Hubble Heritage Team\n\nOn Wednesday, astronomers from the Event Horizon Telescope [released the first image](https:\/\/www.nytimes.com\/2019\/04\/10\/science\/black-hole-picture.html) of the M87 supermassive black hole:\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/EHT-M87-1050.jpg)\n\n## Years in the making\nThe jet of particles streaming from M87 [was discovered in 1918](https:\/\/archive.nytimes.com\/www.nytimes.com\/library\/national\/science\/071100sci-nasa-hubble.1.jpg.html), and radio waves emanating from the center of our galaxy [were first detected in 1931](https:\/\/www.nytimes.com\/1981\/11\/17\/science\/radio-astronomy-50-years-old-moves-toward-a-new-frontier.html).\n\nMore recently, astronomers have [detected gravitational waves](https:\/\/www.nytimes.com\/2016\/02\/12\/science\/ligo-gravitational-waves-black-holes-einstein.html) from colliding black holes and have tracked distant stars swinging past Sagittarius A\\*:\n\nAdvertisement\n\nLIVE\n\n00:00\n\n4:17\n\nCircling a Black Hole\n\n4:17\n## The Event Horizon Telescope\nEight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017.\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/1d83d85cdd0c4cc19190d01a0106ca1907d1d0f6\/globe-720.png)\n\nIRAM 30m Telescope\n\nSpain\n\nS.M.T.\n\nSubmillimeter Telescope\n\nArizona\n\nJ.C.M.T. and S.M.A.\n\nJames Clerk Maxwell Telescope and the Submillimeter Array\n\nHawaii\n\nL.M.T.\n\nThe Large Millimeter Telescope\n\nMexico\n\nAPEX and ALMA\n\nAtacama Pathfinder Experiment and Atacama Large Millimeter\/ Submillimeter Array\n\nChile\n\nS.P.T.\n\nSouth Pole Telescope\n\nAntarctica\n\n![](data:image\/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==)\n\nS.M.T.\n\nSubmillimeter Telescope\n\nArizona\n\nIRAM 30m Telescope\n\nSpain\n\nJ.C.M.T. and S.M.A.\n\nJames Clerk Maxwell Telescope and the Submillimeter Array\n\nHawaii\n\nL.M.T.\n\nThe Large Millimeter Telescope\n\nMexico\n\nAPEX and ALMA\n\nAtacama Pathfinder Experiment, Atacama Large Millimeter\/ Submillimeter Array\n\nChile\n\nS.P.T.\n\nSouth Pole Telescope\n\nAntarctica\n\nThe network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole.\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/EHT-M87-four-days-640.jpg)\n\nFor more about the Event Horizon Telescope, watch a video preview of the experiment from 2015:\n\nAdvertisement\n\nLIVE\n\n00:00\n\n2:25\n\nPeering Into a Black Hole\n\n2:25\n\nSubscribe to the [Science Times newsletter](http:\/\/nyti.ms\/1MbHaRU) and [sync your calendar with the solar system](http:\/\/nyti.ms\/2A875EL).\n\nBackground image by NASA\/JPL-Caltech\/Susan Stolovy.\n\n##\n- [![First-Ever Picture of a Black Hole Is Revealed](https:\/\/static01.nyt.com\/images\/2019\/04\/10\/science\/10BLACKHOLEPHOTO\/10BLACKHOLEPHOTO-mediumThreeByTwo225-v3.jpg) First-Ever Picture of a Black Hole Is Revealed April 30, 2025](https:\/\/www.nytimes.com\/2019\/04\/10\/science\/black-hole-picture.html)\n- [![An Earthling’s Guide to Black Holes](https:\/\/static01.nyt.com\/images\/2015\/06\/09\/science\/09earthlings3\/09earthlings3-mediumThreeByTwo225-v3.jpg) An Earthling’s Guide to Black Holes April 8, 2019](https:\/\/www.nytimes.com\/interactive\/2015\/06\/08\/science\/space\/guide-to-black-holes.html)\n- [![How Do You Take a Picture of a Black Hole? With a Telescope as Big as the Earth](https:\/\/static01.nyt.com\/images\/2018\/10\/04\/magazine\/04blackhole1\/04blackhole1-mediumThreeByTwo225-v5.jpg) How Do You Take a Picture of a Black Hole? With a Telescope as Big as the Earth Oct. 4, 2021](https:\/\/www.nytimes.com\/2018\/10\/04\/magazine\/how-do-you-take-a-picture-of-a-black-hole-with-a-telescope-as-big-as-the-earth.html)\n- [![Circling a Black Hole](https:\/\/static01.nyt.com\/images\/2018\/10\/30\/science\/out-there-black-hole-still\/out-there-black-hole-still-mediumThreeByTwo225.png) Circling a Black Hole July 30, 2019](https:\/\/www.nytimes.com\/video\/science\/100000006142535\/circling-a-black-hole.html)\n- [![At Long Last, a Glimpse of a Black Hole](https:\/\/static01.nyt.com\/images\/2019\/04\/08\/opinion\/08natarajan\/08natarajan-mediumThreeByTwo225.jpg) At Long Last, a Glimpse of a Black Hole April 30, 2025](https:\/\/www.nytimes.com\/2019\/04\/08\/opinion\/black-hole.html)\n\nAdvertisement\n\nClose this overlay\n\n##\nGo to previous\n\nGo to next\n\nLoading...\n\n## Site Information Navigation\n- [© 2026The New York Times Company](https:\/\/help.nytimes.com\/hc\/en-us\/articles\/115014792127-Copyright-notice)\n- [Home](https:\/\/www.nytimes.com\/)\n- [Search](https:\/\/www.nytimes.com\/search\/)\n- [Contact Us](https:\/\/help.nytimes.com\/hc\/en-us\/articles\/115015385887-Contact-Us)\n- [Work with us](https:\/\/www.nytco.com\/careers\/)\n- [Advertise](https:\/\/nytmediakit.com\/)\n- [Your Ad Choices](https:\/\/www.nytimes.com\/privacy\/cookie-policy#how-do-i-manage-trackers)\n- [Privacy](https:\/\/www.nytimes.com\/privacy\/privacy-policy)\n- [Terms of Service](https:\/\/help.nytimes.com\/hc\/en-us\/articles\/115014893428-Terms-of-service)\n- [Terms of Sale](https:\/\/help.nytimes.com\/hc\/en-us\/articles\/115014893968-Terms-of-sale)\n\n## Site Information Navigation\n- [Site Map](https:\/\/www.nytimes.com\/sitemap\/)\n- [Help](https:\/\/help.nytimes.com\/hc\/en-us)\n- [Site Feedback](https:\/\/help.nytimes.com\/hc\/en-us\/articles\/115015385887-Contact-Us?redir=myacc)\n- [Subscriptions](https:\/\/www.nytimes.com\/subscription?campaignId=37WXW)\n\n###\n##### Edition\n- [U.S.](https:\/\/www.nytimes.com\/)\n- [International](http:\/\/global.nytimes.com\/)\n- [中文 (Chinese)](http:\/\/cn.nytimes.com\/)\n- [Español](https:\/\/www.nytimes.com\/es\/)\n\n##### Help\n- [FAQ](https:\/\/www.nytimes.com\/content\/help\/front.html)\n- [Contact Us](http:\/\/www.nytimes.com\/help\/index.html)\n\n##### Type Size\n- [A Type size small]()\n- [A Type size medium]()\n- [A Type size large]()\n\nClose this modal window\n\n### Log in\n#### To save articles or get newsletters, alerts or recommendations – all free.\n\nLog in with Facebook\n\nLog in with Google\n\nOR\n\nDon’t have an account? 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Blow](https:\/\/www.nytimes.com\/column\/charles-m-blow)\n- [Jamelle Bouie](https:\/\/www.nytimes.com\/column\/jamelle-bouie)\n- [David Brooks](https:\/\/www.nytimes.com\/column\/david-brooks)\n- [Frank Bruni](https:\/\/www.nytimes.com\/column\/frank-bruni)\n- [Roger Cohen](https:\/\/www.nytimes.com\/column\/roger-cohen)\n- [Gail Collins](https:\/\/www.nytimes.com\/column\/gail-collins)\n- [Ross Douthat](https:\/\/www.nytimes.com\/column\/ross-douthat)\n- [Maureen Dowd](https:\/\/www.nytimes.com\/column\/maureen-dowd)\n- [Thomas L. Friedman](https:\/\/www.nytimes.com\/column\/thomas-l-friedman)\n- [Michelle Goldberg](https:\/\/www.nytimes.com\/column\/michelle-goldberg)\n- [Nicholas Kristof](https:\/\/www.nytimes.com\/column\/nicholas-kristof)\n- [Paul Krugman](https:\/\/www.nytimes.com\/column\/paul-krugman)\n- [David Leonhardt](https:\/\/www.nytimes.com\/column\/david-leonhardt)\n- [Farhad Manjoo](https:\/\/www.nytimes.com\/column\/farhad-manjoo)\n- [Jennifer Senior](https:\/\/www.nytimes.com\/column\/jennifer-senior)\n- [Bret Stephens](https:\/\/www.nytimes.com\/column\/bret-stephens)\n\nClose this modal window","attrs_readable_markdown":"At the center of our galaxy lies Sagittarius A\\*, a black hole as massive as four million suns:\n\nThe black hole is obscured by thick dust and a bright haze of superheated gases.\n\nAn elusive target\n\nA network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole.\n\nAfter [years of analyzing data](https:\/\/www.nytimes.com\/2019\/04\/08\/science\/black-hole-photo.html), the team did not release an image of Sagittarius A\\* on Wednesday. But it did catch a glimpse of something else.\n\nA giant in Messier 87\n\nAn even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87.\n\nNASA, ESA and the Hubble Heritage Team\n\nThe black hole is spewing a jet of subatomic particles thousands of light years into space.\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/m87-jet-{{size}}.jpg)\n\nNASA and the Hubble Heritage Team\n\nOn Wednesday, astronomers from the Event Horizon Telescope [released the first image](https:\/\/www.nytimes.com\/2019\/04\/10\/science\/black-hole-picture.html) of the M87 supermassive black hole:\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/EHT-M87-{{size}}.jpg)\n\nYears in the making\n\nThe jet of particles streaming from M87 [was discovered in 1918](https:\/\/archive.nytimes.com\/www.nytimes.com\/library\/national\/science\/071100sci-nasa-hubble.1.jpg.html), and radio waves emanating from the center of our galaxy [were first detected in 1931](https:\/\/www.nytimes.com\/1981\/11\/17\/science\/radio-astronomy-50-years-old-moves-toward-a-new-frontier.html).\n\nMore recently, astronomers have [detected gravitational waves](https:\/\/www.nytimes.com\/2016\/02\/12\/science\/ligo-gravitational-waves-black-holes-einstein.html) from colliding black holes and have tracked distant stars swinging past Sagittarius A\\*:\n\nThe Event Horizon Telescope\n\nEight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017.\n\nThe network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole.\n\n![](https:\/\/static01.nyt.com\/newsgraphics\/2019\/04\/10\/event-horizon-black-hole\/assets\/images\/EHT-M87-four-days-{{size}}.jpg)\n\nFor more about the Event Horizon Telescope, watch a video preview of the experiment from 2015:\n\nBackground image by NASA\/JPL-Caltech\/Susan Stolovy.","meta_canonical":null}

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URL	https://www.nytimes.com/interactive/2019/04/10/science/event-horizon-black-hole-images.html
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Meta Title	How They Took the First Picture of a Black Hole - The New York Times
Meta Description	A planet-sized network of radio telescopes has assembled the first image of a black hole.
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Boilerpipe Text	At the center of our galaxy lies Sagittarius A, a black hole as massive as four million suns: The black hole is obscured by thick dust and a bright haze of superheated gases. An elusive target A network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole. After years of analyzing data , the team did not release an image of Sagittarius A on Wednesday. But it did catch a glimpse of something else. A giant in Messier 87 An even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87. NASA, ESA and the Hubble Heritage Team The black hole is spewing a jet of subatomic particles thousands of light years into space. NASA and the Hubble Heritage Team On Wednesday, astronomers from the Event Horizon Telescope released the first image of the M87 supermassive black hole: Years in the making The jet of particles streaming from M87 was discovered in 1918 , and radio waves emanating from the center of our galaxy were first detected in 1931 . More recently, astronomers have detected gravitational waves from colliding black holes and have tracked distant stars swinging past Sagittarius A*: The Event Horizon Telescope Eight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017. The network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole. For more about the Event Horizon Telescope, watch a video preview of the experiment from 2015: Background image by NASA/JPL-Caltech/Susan Stolovy.
Markdown	NYTimes.com no longer supports Internet Explorer 9 or earlier. Please upgrade your browser. [LEARN MORE »](http://www.nytimes.com/content/help/site/ie9-support.html) Sections Home Search ## [The New York Times ![The New York Times](https://www.nytimes.com/vi-assets/static-assets/nyt5/decom-userinfo/images/foundation/logos/nyt-logo-163x30.png)](https://www.nytimes.com/) ### [Science](https://www.nytimes.com/section/science) ###### [Science](https://www.nytimes.com/section/science) \\|How They Took the First Picture of a Black Hole - [Share]() - [Tweet]() - [Email]() - [Share]() - [Save]() Close search ## Site Search Navigation <https://nyti.ms/2UNkPmI> ## Site Navigation - [Home Page](https://www.nytimes.com/) - [World](https://www.nytimes.com/section/world) - [U.S.](https://www.nytimes.com/section/us) - [Politics](https://www.nytimes.com/section/politics) - [N.Y.](https://www.nytimes.com/section/nyregion) - [Business](https://www.nytimes.com/section/business) - [Business](https://www.nytimes.com/section/business) - [Opinion](https://www.nytimes.com/section/opinion) - [Opinion](https://www.nytimes.com/section/opinion) - [Tech](https://www.nytimes.com/section/technology) - [Science](https://www.nytimes.com/section/science) - [Health](https://www.nytimes.com/section/health) - [Sports](https://www.nytimes.com/section/sports) - [Sports](https://www.nytimes.com/section/sports) - [Arts](https://www.nytimes.com/section/arts) - [Arts](https://www.nytimes.com/section/arts) - [Books](https://www.nytimes.com/section/books) - [Style](https://www.nytimes.com/section/style) - [Style](https://www.nytimes.com/section/style) - [Food](https://www.nytimes.com/section/food) - [Food](https://www.nytimes.com/section/food) - [Travel](https://www.nytimes.com/section/travel) - [Magazine](https://www.nytimes.com/section/magazine) - [T Magazine](https://www.nytimes.com/section/t-magazine) - [Real Estate](https://www.nytimes.com/section/realestate) - [Obituaries](https://www.nytimes.com/section/obituaries) - [Video](https://www.nytimes.com/video) - [The Upshot](https://www.nytimes.com/section/upshot) - [Reader Center](https://www.nytimes.com/section/reader-center) - [Conferences]() - [Crossword](https://www.nytimes.com/crosswords) - [Times Insider](https://www.nytimes.com/section/reader-center) - [Newsletters](https://www.nytimes.com/newsletters) - [The Learning Network](https://www.nytimes.com/section/learning) - [Multimedia](https://www.nytimes.com/section/multimedia) - [Photography](https://www.nytimes.com/section/lens) - [Podcasts](https://www.nytimes.com/spotlight/podcasts) - [NYT Store](https://store.nytimes.com/?action=click&contentCollection=NYT%20Store&contentPlacement=2&module=SectionsNav&pgtype=Homepage&region=TopBar&t=qry542&utm_campaign=NYT-HP&utm_content=hp_browsetree&utm_medium=HPB&utm_source=nytimes&version=BrowseTree) - [NYT Wine Club](http://www.nytwineclub.com/) - [nytEducation](http://nytedu.com/) - [Times Journeys](https://www.nytimes.com/times-journeys/?utm_source=nytimes&utm_medium=HPLink&utm_content=hp_browsetree&utm_campaign=NYT-HP&module=SectionsNav&action=click&region=TopBar&version=BrowseTree&contentCollection=Times%20Journeys&contentPlacement=2&pgtype=Homepage) - [Meal Kits](https://www.chefd.com/pages/new-york-times-cooking-meal-plan?utm_campaign=web1_20160617&utm_medium=partner&utm_source=nyt) - [Subscribe](https://www.nytimes.com/seeallnav) - [Manage Account](https://account.nytimes.com/) - [Today's Paper](https://www.nytimes.com/section/todayspaper) - [Tools & Services](https://www.nytimes.com/marketing/tools-and-services/) - [Jobs](https://www.nytimes.com/section/jobs) - [Classifieds](https://www.nytimes.com/ref/classifieds/) - [Corrections](https://www.nytimes.com/section/corrections) - [More]() ## Site Mobile Navigation # How They Took the First Picture of a Black Hole By JONATHAN CORUM APRIL 10, 2019 A planet-sized network of radio telescopes has assembled the first image of a supermassive black hole. ## The dark heart of the Milky Way At the center of our galaxy lies Sagittarius A\, a black hole as massive as four million suns: The black hole is obscured by thick dust and a bright haze of superheated gases. ## An elusive target A network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole. After [years of analyzing data](https://www.nytimes.com/2019/04/08/science/black-hole-photo.html), the team did not release an image of Sagittarius A\ on Wednesday. But it did catch a glimpse of something else. ## A giant in Messier 87 An even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87. ![](data:image/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==) Messier 87 ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/1d83d85cdd0c4cc19190d01a0106ca1907d1d0f6/m87-720.jpg) Messier 87 ![](data:image/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==) Messier 87 NASA, ESA and the Hubble Heritage Team The black hole is spewing a jet of subatomic particles thousands of light years into space. ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/m87-jet-1050.jpg) NASA and the Hubble Heritage Team On Wednesday, astronomers from the Event Horizon Telescope [released the first image](https://www.nytimes.com/2019/04/10/science/black-hole-picture.html) of the M87 supermassive black hole: ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/EHT-M87-1050.jpg) ## Years in the making The jet of particles streaming from M87 [was discovered in 1918](https://archive.nytimes.com/www.nytimes.com/library/national/science/071100sci-nasa-hubble.1.jpg.html), and radio waves emanating from the center of our galaxy [were first detected in 1931](https://www.nytimes.com/1981/11/17/science/radio-astronomy-50-years-old-moves-toward-a-new-frontier.html). More recently, astronomers have [detected gravitational waves](https://www.nytimes.com/2016/02/12/science/ligo-gravitational-waves-black-holes-einstein.html) from colliding black holes and have tracked distant stars swinging past Sagittarius A\*: Advertisement LIVE 00:00 4:17 Circling a Black Hole 4:17 ## The Event Horizon Telescope Eight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017. ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/1d83d85cdd0c4cc19190d01a0106ca1907d1d0f6/globe-720.png) IRAM 30m Telescope Spain S.M.T. Submillimeter Telescope Arizona J.C.M.T. and S.M.A. James Clerk Maxwell Telescope and the Submillimeter Array Hawaii L.M.T. The Large Millimeter Telescope Mexico APEX and ALMA Atacama Pathfinder Experiment and Atacama Large Millimeter/ Submillimeter Array Chile S.P.T. South Pole Telescope Antarctica ![](data:image/gif;base64,R0lGODlhCgAKAIAAAB8fHwAAACH5BAEAAAAALAAAAAAKAAoAAAIIhI+py+0PYysAOw==) S.M.T. Submillimeter Telescope Arizona IRAM 30m Telescope Spain J.C.M.T. and S.M.A. James Clerk Maxwell Telescope and the Submillimeter Array Hawaii L.M.T. The Large Millimeter Telescope Mexico APEX and ALMA Atacama Pathfinder Experiment, Atacama Large Millimeter/ Submillimeter Array Chile S.P.T. South Pole Telescope Antarctica The network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole. ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/EHT-M87-four-days-640.jpg) For more about the Event Horizon Telescope, watch a video preview of the experiment from 2015: Advertisement LIVE 00:00 2:25 Peering Into a Black Hole 2:25 Subscribe to the [Science Times newsletter](http://nyti.ms/1MbHaRU) and [sync your calendar with the solar system](http://nyti.ms/2A875EL). Background image by NASA/JPL-Caltech/Susan Stolovy. ## - [![First-Ever Picture of a Black Hole Is Revealed](https://static01.nyt.com/images/2019/04/10/science/10BLACKHOLEPHOTO/10BLACKHOLEPHOTO-mediumThreeByTwo225-v3.jpg) First-Ever Picture of a Black Hole Is Revealed April 30, 2025](https://www.nytimes.com/2019/04/10/science/black-hole-picture.html) - [![An Earthling’s Guide to Black Holes](https://static01.nyt.com/images/2015/06/09/science/09earthlings3/09earthlings3-mediumThreeByTwo225-v3.jpg) An Earthling’s Guide to Black Holes April 8, 2019](https://www.nytimes.com/interactive/2015/06/08/science/space/guide-to-black-holes.html) - [![How Do You Take a Picture of a Black Hole? With a Telescope as Big as the Earth](https://static01.nyt.com/images/2018/10/04/magazine/04blackhole1/04blackhole1-mediumThreeByTwo225-v5.jpg) How Do You Take a Picture of a Black Hole? With a Telescope as Big as the Earth Oct. 4, 2021](https://www.nytimes.com/2018/10/04/magazine/how-do-you-take-a-picture-of-a-black-hole-with-a-telescope-as-big-as-the-earth.html) - [![Circling a Black Hole](https://static01.nyt.com/images/2018/10/30/science/out-there-black-hole-still/out-there-black-hole-still-mediumThreeByTwo225.png) Circling a Black Hole July 30, 2019](https://www.nytimes.com/video/science/100000006142535/circling-a-black-hole.html) - [![At Long Last, a Glimpse of a Black Hole](https://static01.nyt.com/images/2019/04/08/opinion/08natarajan/08natarajan-mediumThreeByTwo225.jpg) At Long Last, a Glimpse of a Black Hole April 30, 2025](https://www.nytimes.com/2019/04/08/opinion/black-hole.html) Advertisement Close this overlay ## Go to previous Go to next Loading... ## Site Information Navigation - [© 2026The New York Times Company](https://help.nytimes.com/hc/en-us/articles/115014792127-Copyright-notice) - [Home](https://www.nytimes.com/) - [Search](https://www.nytimes.com/search/) - [Contact Us](https://help.nytimes.com/hc/en-us/articles/115015385887-Contact-Us) - [Work with us](https://www.nytco.com/careers/) - [Advertise](https://nytmediakit.com/) - [Your Ad Choices](https://www.nytimes.com/privacy/cookie-policy#how-do-i-manage-trackers) - [Privacy](https://www.nytimes.com/privacy/privacy-policy) - [Terms of Service](https://help.nytimes.com/hc/en-us/articles/115014893428-Terms-of-service) - [Terms of Sale](https://help.nytimes.com/hc/en-us/articles/115014893968-Terms-of-sale) ## Site Information Navigation - [Site Map](https://www.nytimes.com/sitemap/) - [Help](https://help.nytimes.com/hc/en-us) - [Site Feedback](https://help.nytimes.com/hc/en-us/articles/115015385887-Contact-Us?redir=myacc) - [Subscriptions](https://www.nytimes.com/subscription?campaignId=37WXW) ### ##### Edition - [U.S.](https://www.nytimes.com/) - [International](http://global.nytimes.com/) - [中文 (Chinese)](http://cn.nytimes.com/) - [Español](https://www.nytimes.com/es/) ##### Help - [FAQ](https://www.nytimes.com/content/help/front.html) - [Contact Us](http://www.nytimes.com/help/index.html) ##### Type Size - [A Type size small]() - [A Type size medium]() - [A Type size large]() Close this modal window ### Log in #### To save articles or get newsletters, alerts or recommendations – all free. 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Readable Markdown	At the center of our galaxy lies Sagittarius A\, a black hole as massive as four million suns: The black hole is obscured by thick dust and a bright haze of superheated gases. An elusive target A network of eight telescopes called the Event Horizon Telescope tried to use radio waves to peer through the dust cloud and glimpse the edge of the black hole. After [years of analyzing data](https://www.nytimes.com/2019/04/08/science/black-hole-photo.html), the team did not release an image of Sagittarius A\ on Wednesday. But it did catch a glimpse of something else. A giant in Messier 87 An even larger black hole, nearly 7 billion times the mass of the sun, sits at the heart of the nearby galaxy Messier 87. NASA, ESA and the Hubble Heritage Team The black hole is spewing a jet of subatomic particles thousands of light years into space. ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/m87-jet-{{size}}.jpg) NASA and the Hubble Heritage Team On Wednesday, astronomers from the Event Horizon Telescope [released the first image](https://www.nytimes.com/2019/04/10/science/black-hole-picture.html) of the M87 supermassive black hole: ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/EHT-M87-{{size}}.jpg) Years in the making The jet of particles streaming from M87 [was discovered in 1918](https://archive.nytimes.com/www.nytimes.com/library/national/science/071100sci-nasa-hubble.1.jpg.html), and radio waves emanating from the center of our galaxy [were first detected in 1931](https://www.nytimes.com/1981/11/17/science/radio-astronomy-50-years-old-moves-toward-a-new-frontier.html). More recently, astronomers have [detected gravitational waves](https://www.nytimes.com/2016/02/12/science/ligo-gravitational-waves-black-holes-einstein.html) from colliding black holes and have tracked distant stars swinging past Sagittarius A\*: The Event Horizon Telescope Eight radio telescopes around the world synchronized their observations of the black holes over 10 days in April, 2017. The network of telescopes was sensitive enough to observe daily variations in the bright ring around the M87 black hole. ![](https://static01.nyt.com/newsgraphics/2019/04/10/event-horizon-black-hole/assets/images/EHT-M87-four-days-{{size}}.jpg) For more about the Event Horizon Telescope, watch a video preview of the experiment from 2015: Background image by NASA/JPL-Caltech/Susan Stolovy.
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