{"id":4579,"date":"2026-05-31T04:00:58","date_gmt":"2026-05-31T02:00:58","guid":{"rendered":"https:\/\/studentmag.unipr.it\/?p=4579"},"modified":"2026-05-30T11:08:20","modified_gmt":"2026-05-30T09:08:20","slug":"il-meraviglioso-viaggio-delle-voyager","status":"publish","type":"post","link":"https:\/\/studentmag.unipr.it\/index.php\/2026\/05\/31\/il-meraviglioso-viaggio-delle-voyager\/","title":{"rendered":"Il meraviglioso viaggio delle Voyager"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--link_color: var(--awb-color4);--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1144px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-center fusion-content-layout-row\"><ul style=\"--awb-size:18px;--awb-iconcolor:var(--awb-color3);--awb-line-height:30.6px;--awb-icon-width:30.6px;--awb-icon-height:30.6px;--awb-icon-margin:12.6px;--awb-content-margin:43.2px;\" class=\"fusion-checklist fusion-checklist-1 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-camera fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>Foto di <a href=\"https:\/\/www.pexels.com\/it-it\/@paulseling\/\" target=\"_blank\" rel=\"noopener\"><strong>Paul Seling<\/strong><\/a><\/p>\n<\/div><\/li><\/ul><div class=\"fusion-section-separator section-separator grunge fusion-section-separator-1\" style=\"--awb-spacer-height:43px;--awb-svg-margin-left:1.92%;--awb-svg-margin-right:1.92%;--awb-svg-margin-left-medium:1.92%;--awb-svg-margin-right-medium:1.92%;--awb-svg-margin-left-small:1.92%;--awb-svg-margin-right-small:1.92%;--awb-bg-size:100% 100%;--awb-bg-size-medium:100% 100%;--awb-bg-size-small:100% 100%;\"><div class=\"fusion-section-separator-svg\"><div class=\"fusion-grunge-candy-sep fusion-section-separator-svg-bg\" style=\"background-image:url( 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);height:43px;\"><\/div><\/div><div class=\"fusion-section-separator-spacer\"><div class=\"fusion-section-separator-spacer-height\"><\/div><\/div><\/div><div class=\"fusion-separator fusion-has-icon fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;width:100%;\"><div class=\"fusion-separator-border sep-single sep-dashed\" style=\"--awb-height:20px;--awb-amount:20px;border-color:var(--awb-color2);border-top-width:3px;\"><\/div><span class=\"icon-wrapper\" style=\"border-color:transparent;font-size:23px;width: 1.75em; height: 1.75em;border-width:3px;padding:3px;margin-top:-1.5px\"><i class=\"fa-angle-double-down fas\" style=\"font-size: inherit;color:var(--awb-color2);\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-separator-border sep-single sep-dashed\" style=\"--awb-height:20px;--awb-amount:20px;border-color:var(--awb-color2);border-top-width:3px;\"><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\" style=\"--awb-content-alignment:justify;\"><p>Siamo, in un certo senso, una specie interstellare. Infatti, dal 2012 la sonda<strong> Voyager 1<\/strong> \u00e8 ufficialmente uscita dalla bolla di influenza del Sole e, insieme alla sua gemella <strong>Voyager 2<\/strong>, continua ancora oggi il suo viaggio nello spazio interstellare.<\/p>\n<p>Le due sonde della<strong> NASA<\/strong> lanciate nel 1977 a distanza di pochi mesi, avevano l\u2019obiettivo di esplorare i pianeti del Sistema Solare esterno. Entrambe hanno visitato Giove e Saturno, scattando immagini senza precedenti e studiandone atmosfera, anelli e satelliti durante i sorvoli. Nel 1990, la Voyager 1 ha scattato la celebre immagine <em><strong>Pale Blue Dot<\/strong><\/em>, che mostra la Terra come un minuscolo e pallido puntino blu distante circa 6 miliardi di chilometri.<\/p>\n<p>La sua gemella, invece, sfruttando un raro allineamento planetario ha proseguito il viaggio e visitato per la prima volta anche i giganti ghiacciati: Urano nel 1986 e Nettuno nel 1989. Ancora oggi, resta l\u2019unica sonda ad aver esplorato tutti e quattro i pianeti giganti del Sistema Solare. Questi incontri ravvicinati hanno permesso scoperte fondamentali, come l\u2019estrema inclinazione di Urano e i venti potentissimi di Nettuno. Dopo questi sorvoli, le sonde hanno continuato il loro viaggio a velocit\u00e0 straordinarie: circa 61.000 km\/h per Voyager 1 e 54.000 km\/h per Voyager 2, rendendole tra gli oggetti pi\u00f9 veloci mai costruiti in fuga dal Sistema Solare. Nonostante ci\u00f2, solo nel 2012 e nel 2018 raggiungono lo spazio interstellare, dopo aver attraversato regioni di confine come la <em>termination shock<\/em> e l\u2019eliopausa, dove il vento solare (flusso di particelle proveniente dal Sole) si indebolisce lasciando spazio a particelle provenienti da altre stelle.<\/p>\n<p>Oggi si trovano a distanze impressionanti: circa 25 miliardi di chilometri per Voyager 1 e 20 miliardi per Voyager 2. Un segnale radio impiega quasi un giorno per raggiungerle, pur viaggiando alla velocit\u00e0 della luce.<\/p>\n<p>A quasi 50 anni dal lancio, le sonde sono ancora operative grazie a un generatore a radioisotopi (una sorta di \u201cbatteria nucleare\u201d), anche se la loro energia \u00e8 in costante diminuzione. Negli ultimi anni, la NASA ha spento progressivamente diversi strumenti per prolungarne la vita operativa. Tuttavia, il loro destino \u00e8 inevitabile: entro circa un decennio smetteranno definitivamente di funzionare, perdendo ogni contatto con la Terra.<\/p>\n<p>Nel frattempo, proseguono il loro viaggio silenzioso nella Galassia: Voyager 1 \u00e8 diretta verso la stella Gliese 445, nella costellazione dell\u2019Ofiuco, mentre Voyager 2 si muove in direzione di Ross 248, nella costellazione del Pavone.<\/p>\n<p>Ma anche quando si spegneranno per sempre, la loro missione non sar\u00e0 davvero conclusa. A bordo delle due sonde sono infatti presenti i <strong>Golden Record<\/strong>, dischi d\u2019oro incisi con informazioni sull\u2019umanit\u00e0: immagini, suoni della Terra, musiche e indicazioni sulla posizione del Sistema Solare. Questi dischi sono veri e propri \u201cmessaggi in bottiglia\u201d lanciati nel vasto oceano cosmico. Chiss\u00e0, forse un giorno verranno intercettati da una civilt\u00e0 extraterrestre, che potr\u00e0 cos\u00ec scoprire la nostra esistenza. E anche se ci\u00f2 non dovesse mai accadere, le sonde continueranno comunque il loro viaggio per milioni di anni, diventando una testimonianza silenziosa: la prova che, su un piccolo puntino blu perso nell\u2019immensit\u00e0 dell\u2019universo, \u00e8 esistita, ed esiste, una specie animata da un profondo desiderio di conoscenza, capace di spingersi oltre i propri limiti per esplorare l\u2019ignoto.<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Come siamo diventati una specie interstellare<\/p>\n","protected":false},"author":8,"featured_media":4580,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[25],"tags":[202],"autore":[204],"class_list":["post-4579","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cool-tura","tag-scienza","autore-andrea-salvemini"],"acf":[],"_links":{"self":[{"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/posts\/4579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/comments?post=4579"}],"version-history":[{"count":2,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/posts\/4579\/revisions"}],"predecessor-version":[{"id":4583,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/posts\/4579\/revisions\/4583"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/media\/4580"}],"wp:attachment":[{"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/media?parent=4579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/categories?post=4579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/tags?post=4579"},{"taxonomy":"autore","embeddable":true,"href":"https:\/\/studentmag.unipr.it\/index.php\/wp-json\/wp\/v2\/autore?post=4579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}