{"id":4616,"date":"2017-05-10T00:00:00","date_gmt":"2017-05-10T00:00:00","guid":{"rendered":"https:\/\/www.vialattea.net\/content\/4616\/"},"modified":"2017-11-07T11:26:17","modified_gmt":"2017-11-07T09:26:17","slug":"4616","status":"publish","type":"post","link":"https:\/\/www.vialattea.net\/content\/4616\/","title":{"rendered":"Splendide riprese multi-spettrali della nebulosa granchio"},"content":{"rendered":"<div id=\"gt-res-dir-ctr\" class=\"trans-verified-button-small\" dir=\"ltr\">\n<p><span id=\"result_box\" lang=\"it\"><span title=\"In the summer of the year 1054 AD, Chinese astronomers saw a new &quot;guest star,&quot; that appeared six times brighter than Venus.\">Nell&#8217;estate dell&#8217;anno 1054 dC, gli astronomi cinesi hanno visto apparire una nuova &#8220;stella ospite&#8221;,\u00a0sei volte pi\u00f9 luminosa di Venere. <\/span><span title=\"So bright in fact, it could be seen during the daytime for several months.\">Cos\u00ec brillante che\u00a0si poteva vedere durante il giorno per diversi mesi. Dall&#8217;altra parte del globo<\/span><span title=\"Halfway around the world, Native Americans made pictographs of a crescent moon with the bright star nearby that some think may also have been a record of the supernova. \">, i nativi americani realizzarono pittogrammi con una luna crescente ed una\u00a0stella luminosa vicina, che alcuni pensano potrebbe trattarsi di una\u00a0registrazione storica dell&#8217;evento.<\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6818 aligncenter\" src=\"https:\/\/www.vialattea.net\/content\/wp-content\/uploads\/2017\/11\/2017-21.png\" alt=\"\" width=\"400\" height=\"400\" srcset=\"https:\/\/www.vialattea.net\/content\/wp-content\/uploads\/2017\/11\/2017-21.png 400w, https:\/\/www.vialattea.net\/content\/wp-content\/uploads\/2017\/11\/2017-21-150x150.png 150w, https:\/\/www.vialattea.net\/content\/wp-content\/uploads\/2017\/11\/2017-21-300x300.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><span title=\"This &quot;guest star&quot; was forgotten about until 700 years later with the advent of telescopes.\">Questa &#8220;stella ospite&#8221; \u00e8 stata dimenticata per circa 700 anni, fino all&#8217;avvento dei telescopi. <\/span><span title=\"Astronomers saw a tentacle-like nebula in the place of the vanished star and called it the Crab Nebula.\">Gli astronomi vedevano una nebulosa simile a una chela al posto della stella scomparsa e la chiamarono la nebulosa granchio. <\/span><span title=\"Today we know it as the expanding gaseous remnant from a star that self-detonated as a supernova, briefly shining as brightly as 400 million suns.\">Oggi sappiamo che si tratta del residuo gassoso in espansione da una stella che \u00e8 esplosa come una supernova, risplendendo per breve tempo come 400 milioni di soli. <\/span><span title=\"The explosion took place 6,500 light-years away.\">L&#8217;esplosione \u00e8 avvenuta alla distanza di 6500 anni luce. <\/span><span title=\"If the blast had instead happened 50 light-years away it would have irradiated Earth, wiping out most life forms. \">Se l&#8217;esplosione fosse avvenuta a soli 50 anni luce, avrebbe irradiato la Terra, eliminando la maggior parte delle forme di vita.<\/span><\/p>\n<p><span title=\"In the late 1960s astronomers discovered the crushed heart of the doomed star, an ultra-dense neutron star that is a dynamo of intense magnetic field and radiation energizing the nebula.\">Alla fine degli anni Sessanta gli astronomi hanno scoperto il cuore condensato della stella, una stella di neutroni ultra densa che, ruotando velocemente, crea un intenso campo magnetico e radiazioni che alimentano la nebulosa. <\/span><span title=\"Astronomers therefore need to study the Crab Nebula across a broad range of electromagnetic radiation, from X-rays to radio waves.\">Gli astronomi hanno quindi bisogno di studiare la Nebulosa di Granchio attraverso una vasta gamma di radiazioni elettromagnetiche, dai raggi X alle onde radio. <\/span><span title=\"This composite picture from five observatories captures the complexity of this tortured-looking supernova remnant.\">Questa immagine composta da cinque osservatori cattura la complessit\u00e0 di questo residuo soprannaturale dall&#8217;aspetto tormentato.<\/span><span id=\"t-served-community-button\" class=\"trans-verified-button goog-toolbar-button\" role=\"button\" aria-hidden=\"true\"><\/span><\/p>\n<\/div>\n<div id=\"gt-edit\"><\/div>\n<div id=\"gt-res-tools\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>[&#8230;]<\/p>\n","protected":false},"author":348,"featured_media":5820,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-4616","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-supernovae-hst"],"_links":{"self":[{"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/posts\/4616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/users\/348"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/comments?post=4616"}],"version-history":[{"count":0,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/posts\/4616\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/media\/5820"}],"wp:attachment":[{"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/media?parent=4616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/categories?post=4616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vialattea.net\/content\/wp-json\/wp\/v2\/tags?post=4616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}