{"id":94573,"date":"2024-10-29T12:47:01","date_gmt":"2024-10-29T10:47:01","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=94573"},"modified":"2024-10-29T12:47:01","modified_gmt":"2024-10-29T10:47:01","slug":"incredibila-imagine-a-unei-nebuloase-aflata-la-distanta-de-7-500-de-ani-lumina-pare-a-fi-o-papadie-cosmica-sau-un-foc-de-artificii","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/incredibila-imagine-a-unei-nebuloase-aflata-la-distanta-de-7-500-de-ani-lumina-pare-a-fi-o-papadie-cosmica-sau-un-foc-de-artificii\/","title":{"rendered":"Incredibil\u0103 imagine a unei nebuloase aflat\u0103 la distan\u0163a de 7.500 de ani-lumin\u0103: pare a fi o &#8222;p\u0103p\u0103die cosmic\u0103&#8221; sau un foc de artificii&#8230;"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/10\/papadie-cosmica.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft  wp-image-94574\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/10\/papadie-cosmica.jpg\" alt=\"\" width=\"361\" height=\"241\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/10\/papadie-cosmica.jpg 547w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/10\/papadie-cosmica-300x200.jpg 300w\" sizes=\"auto, (max-width: 361px) 100vw, 361px\" \/><\/a>Undeva \u00een spa\u021biul cosmic, exist\u0103 o frumoas\u0103 &#8222;buruian\u0103 cosmic\u0103&#8221;, sub forma unei &#8222;p\u0103p\u0103dii&#8221;, care \u00ee\u0219i arunc\u0103 metaforic &#8222;polenul&#8221; la viteze foarte mari. Timp de aproape 900 de ani, explozia spa\u021bial\u0103 masiv\u0103 care a f\u0103cut ca aceast\u0103 &#8222;p\u0103p\u0103die&#8221; s\u0103 \u00eenfloreasc\u0103 a fost un mister. Acum, un telescop de ultim\u0103 genera\u0163ie ofer\u0103 cea mai bun\u0103 imagine de p\u00e2n\u0103 acum.<\/p>\n<p>&#8222;P\u0103p\u0103dia&#8221; cosmic\u0103 este de fapt o <strong>nebuloas\u0103<\/strong>, numit\u0103 <strong>Nebuloasa Pa 30<\/strong>, iar forma ei are unele excentricit\u0103\u021bi. \u00cen 2023, astronomii de la Dartmouth College \u0219i Louisiana State University au descris materia rezultat\u0103 din explozie ca fiind aglomerat\u0103 \u00een filamente, \u00eencol\u021bind din centru ca puful unei p\u0103p\u0103dii. Interesul oamenilor pentru aceast\u0103 nebuloas\u0103 poate fi urm\u0103rit \u00eenc\u0103 din anul 1181, c\u00e2nd astronomii din Japonia \u0219i China au \u00eenregistrat c\u0103 au v\u0103zut o nou\u0103 stea. Dup\u0103 \u0219ase luni, a disp\u0103rut, dar nu a fost uitat\u0103. \u00cen 2013, un astronom amator, pe nume <strong>Dana Patchick<\/strong>, se uita la imaginile realizate de telescopul spa\u0163ial NASA \u00een infraro\u015fu <strong>WISE<\/strong>. El a identificat o nebuloas\u0103 \u00een regiunea spa\u021biului cosmic unde s-ar fi putut afla steaua, la 7.500 de ani-lumin\u0103 distan\u021b\u0103 de P\u0103m\u00e2nt, \u00een constela\u021bia Cassiopeea. \u00cen deceniul care a urmat, astronomii au concluzionat c\u0103 nebuloasa Pa 30 era probabil r\u0103m\u0103\u0219i\u021ba unei supernove, la care astronomii antici au fost martori.<\/p>\n<p>Nebuloasele sunt colec\u021bii de materie str\u0103lucitoare \u0219i adesea gigantice, cum ar fi gazul ionizat \u0219i praful spa\u021bial. Dar nu toate nebuloasele sunt la fel. Unele sunt compuse din r\u0103m\u0103\u0219i\u021be de stele, care mor \u00een explozii masive. A\u0219a s-a \u00eent\u00e2mplat \u00een cazul Nebuloasei Pa 30, iar unele dintre rezultate sunt unice printre nebuloasele cunoscute. \u00cen miezul s\u0103u, r\u0103m\u00e2ne o r\u0103m\u0103\u0219i\u021b\u0103 a stelei sale de na\u0219tere, cu o temperatur\u0103 la suprafa\u021b\u0103 de 200.000 grade Celsius. Pentru referin\u021b\u0103, Soarele nostru are o temperatur\u0103 la suprafa\u021b\u0103 de aproximativ 5.500 grade Celsius. Steaua ejecteaz\u0103, de asemenea, material departe de ea \u00eens\u0103\u0219i, cu o vitez\u0103 incredibil\u0103 de 1.000 de kilometri pe secund\u0103.<\/p>\n<p><strong>Tim Cunningham<\/strong>, cercet\u0103tor NASA Hubble la Centrul Harvard &#8211; Smithsonian pentru Astrofizic\u0103, \u00eempreun\u0103 cu colegii s\u0103i au vrut s\u0103-\u015fi fac\u0103 o idee mai bun\u0103 despre forma filamentelor nebuloasei. Ei au apelat la un dispozitiv din Hawaii, numit <strong>Keck Cosmic Web Imager<\/strong> (<strong>KCWI<\/strong>), care detecteaz\u0103 lumina \u00een spectrul vizibil. Culorile diferite se mi\u0219c\u0103 cu cantit\u0103\u021bi diferite de energie. De exemplu, albastrul are niveluri de energie relativ ridicate \u00een compara\u021bie cu ro\u0219u. Diferen\u021ba de energie a permis astronomilor s\u0103 elaboreze ce materie se mi\u0219c\u0103 \u00een direc\u021bia P\u0103m\u00e2ntului \u0219i care se \u00eendep\u0103rteaz\u0103. Rezultatul a fost o hart\u0103 3D a filamentelor nebuloasei. Forma este asimetric\u0103, ceea ce sugereaz\u0103 c\u0103 explozia original\u0103 a fost \u0219i ea asimetric\u0103.<\/p>\n<p>Exist\u0103, de asemenea, o cavitate ciudat\u0103 a vidului, care are o l\u0103\u021bime de p\u00e2n\u0103 la 3 ani-lumin\u0103, \u00eentre r\u0103m\u0103\u0219i\u021bele stelei din mijloc \u0219i filamente, fiind probabil rezultatul exploziei ce a distrus toat\u0103 materia care era prea aproape de centrul s\u0103u. O imagine standard a r\u0103m\u0103\u0219i\u021bei supernovei ar fi ca o fotografie static\u0103 a unui foc de artificii.<\/p>\n<p><strong>Sursa:<\/strong> articolul \u015ftiin\u0163ific <a href=\"https:\/\/www.caltech.edu\/about\/news\/dandelion-supernova-revealed-in-3-d\" target=\"_blank\" rel=\"noopener\"><strong>&#8222;Dandelion Supernova Revealed in 3-D&#8221; \/ caltech.edu<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Undeva \u00een spa\u021biul cosmic, exist\u0103 o frumoas\u0103 &#8222;buruian\u0103 cosmic\u0103&#8221;, sub forma unei &#8222;p\u0103p\u0103dii&#8221;, care \u00ee\u0219i arunc\u0103 metaforic &#8222;polenul&#8221; la viteze foarte mari. Timp de aproape 900 de ani, explozia spa\u021bial\u0103 masiv\u0103 care a f\u0103cut ca aceast\u0103 &#8222;p\u0103p\u0103die&#8221; s\u0103 \u00eenfloreasc\u0103 a &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Incredibil\u0103 imagine a unei nebuloase aflat\u0103 la distan\u0163a de 7.500 de ani-lumin\u0103: pare a fi o &#8222;p\u0103p\u0103die cosmic\u0103&#8221; sau un foc de artificii&#8230;\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/incredibila-imagine-a-unei-nebuloase-aflata-la-distanta-de-7-500-de-ani-lumina-pare-a-fi-o-papadie-cosmica-sau-un-foc-de-artificii\/#more-94573\" aria-label=\"Cite\u0219te mai multe despre Incredibil\u0103 imagine a unei nebuloase aflat\u0103 la distan\u0163a de 7.500 de ani-lumin\u0103: pare a fi o &#8222;p\u0103p\u0103die cosmic\u0103&#8221; sau un foc de artificii&#8230;\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":94574,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11039],"tags":[658,4353,7396,102,6658,446,103,877,15,2693,352,128,345,150,2359,105,7325,6987,865,733,2317,2358,3629,4491],"class_list":["post-94573","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","tag-3d","tag-artificii","tag-astronomi","tag-astronomie","tag-cassiopeea","tag-china","tag-constelatie","tag-culori","tag-fotografie","tag-gaze","tag-hawaii","tag-japonia","tag-materie","tag-nasa","tag-nebuloasa","tag-pamant","tag-papadie","tag-praf","tag-soare","tag-stea","tag-supernova","tag-temperatura","tag-vid","tag-wise","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Incredibil\u0103 imagine a unei nebuloase aflat\u0103 la distan\u0163a de 7.500 de ani-lumin\u0103: pare a fi o &quot;p\u0103p\u0103die cosmic\u0103&quot; sau un foc de artificii... - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/incredibila-imagine-a-unei-nebuloase-aflata-la-distanta-de-7-500-de-ani-lumina-pare-a-fi-o-papadie-cosmica-sau-un-foc-de-artificii\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Incredibil\u0103 imagine a unei nebuloase aflat\u0103 la distan\u0163a de 7.500 de ani-lumin\u0103: pare a fi o &quot;p\u0103p\u0103die cosmic\u0103&quot; sau un foc de artificii...\" \/>\n<meta property=\"og:description\" content=\"Undeva \u00een spa\u021biul cosmic, exist\u0103 o frumoas\u0103 &#8222;buruian\u0103 cosmic\u0103&#8221;, sub forma unei &#8222;p\u0103p\u0103dii&#8221;, care \u00ee\u0219i arunc\u0103 metaforic &#8222;polenul&#8221; la viteze foarte mari. 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la viteze foarte mari. 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