{"id":85630,"date":"2023-05-17T15:11:22","date_gmt":"2023-05-17T12:11:22","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=85630"},"modified":"2023-05-17T15:11:22","modified_gmt":"2023-05-17T12:11:22","slug":"din-secretul-mesajului-arecibo-trimis-in-1974-in-spatiul-extraterestru-la-24-000-de-ani-lumina-distanta","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/din-secretul-mesajului-arecibo-trimis-in-1974-in-spatiul-extraterestru-la-24-000-de-ani-lumina-distanta\/","title":{"rendered":"Din secretul &#8222;mesajului Arecibo&#8221; trimis \u00een 1974 \u00een spa\u0163iul extraterestru, la 24.000 de ani-lumin\u0103 distan\u0163\u0103"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo-coperta.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-85632\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo-coperta.jpg\" alt=\"\" width=\"348\" height=\"230\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo-coperta.jpg 348w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo-coperta-300x198.jpg 300w\" sizes=\"auto, (max-width: 348px) 100vw, 348px\" \/><\/a>\u00cen 1974, uria\u0219a anten\u0103 de la Arecibo, instalat\u0103 \u00een craterul unui vulcan stins, \u00een insula Puerto Rico, a lansat un mesaj extraterestru la uluitoarea distan\u021b\u0103 de 24.000 de ani-lumin\u0103, adic\u0103 la de vreo 24.060 de ori zece mii de miliarde de kilometri! Direc\u021bia: un conglomerat de stele care num\u0103r\u0103 vreo 309.000 de a\u0219tri \u0219i se afl\u0103 la limita galaxiei noastre.<\/p>\n<p>Pe 16 noiembrie 1974, Frank Drake, directorul de atunci al Observatorului spa\u0163ial de la Arecibo, a lansat mesajul spre spa\u0163iul extraterestru. Drake este pionierul comunica\u021biilor interstelare, pentru c\u0103 \u00een 1960 el a \u00eencercat s\u0103 detecteze eventualele semnale extraterestre, &#8222;ascult\u00e2nd&#8221; doi a\u0219tri din imediata vecin\u0103tate a lumii noastre solare. Aceast\u0103 prim\u0103 tentativ\u0103 a declan\u0219at \u00een fosta URSS \u015fi \u00een SUA vaste programe de lucru.<\/p>\n<p>\u00cen 1974, Drake a ales o \u021bint\u0103 pe care Arecibo o putea atinge &#8211; aglomerarea stelar\u0103 Messier 13, situat\u0103 la 24.000 de ani lumin\u0103 dep\u0103rtare de noi. Este o experien\u021b\u0103 foarte sofisticat\u0103. Aplic\u00e2nd schema propus\u0103 de savantul sovietic Kardashev pentru comunica\u021biile la mari distan\u021be, fascicolul direct emis de uria\u0219a anten\u0103 a fost astfel reglat pe \u021bint\u0103 \u00eenc\u00e2t s-o acopere \u00een \u00eentregime. A\u0219adar, emisia s\u0103 poat\u0103 fi recep\u021bionat\u0103 de toate stelele din grupul Messier 13. S-a ales o lungime de und\u0103 optim\u0103 &#8211; 12,6 cm. Iar pentru o cea mai mare siguran\u021b\u0103 a transmisiei, nu s-a folosit doar un singur regim de impulsuri. Mesajul a fost purtat de frecven\u021be apropiate. Dou\u0103 tonalit\u0103\u021bi diferite permit s\u0103 se identifice la recep\u021bie, cele dou\u0103 tipuri de semnale.<\/p>\n<p>Drake a meditat \u0219i asupra mesajului. Dac\u0103 s-ar fi mul\u021bumit cu un semnal de apel, dat fiind distan\u021ba fantastic\u0103, eventualul r\u0103spuns ar fi trebuit a\u0219teptat&#8230; 48.000 de ani! Iat\u0103 motivul pentru care mesajul con\u021bine o suficient de larg\u0103 informa\u021bie&#8230; \u00cen mai pu\u021bin de 3 minute, antena de la Arecibo a transmis 1.679 semnale&#8230; Bip. bip&#8230; Aceste unit\u0103\u021bi de informa\u021bie sau bi\u021bi pot fi desf\u0103\u0219urate pe 73 de r\u00e2nduri de c\u00e2te 23 bi\u021bi, \u0219tiind c\u0103 1.679 este multiplul a dou\u0103 numere prime: 73 \u0219i 23. Conferindu-se dou\u0103 valori diferite celor dou\u0103 feluri de semnale, apare un desen u\u0219or de descifrat.<\/p>\n<p>Prima linie a mesajului dezv\u0103luie metoda &#8211; un cod &#8211; permi\u021b\u00e2nd desf\u0103\u0219urarea num\u0103r\u0103torii, de la 1 la 10. \u0218i nu este nicio dificultate \u00een a \u00een\u021belege c\u0103 trebuie citit de la dreapta la st\u00e2nga. Pornind de aici, poate fi descifrat primul rebus. Se afl\u0103 num\u0103rul atomic al celor 5 elemente de baz\u0103 a biochimiei noastre: hidrogenul, carbonul, azotul, oxigenul, \u0219i fosforul (de la dreapta la st\u00e2nga: 1, 6, 7, 8, 15). Mai departe, se d\u0103 structura molecular\u0103 a diferitelor zaharuri formate cu ajutorul celor 5 elemente precedente. Se observ\u0103 de asemenea 4 scheme ale grupului de fosfa\u021bi (un atom de fosfor \u0219i 4 atomi de oxigen). Se \u00een\u021belege c\u0103 este vorba de a-l informa pe eventualul cititor extraterestru al mesajului asupra structurii acidului esen\u021bial al biochimiei noastre, ADN-ul (acidul dezoxiribonucleic), care are un rol decisiv \u00een transmisia codului genetic \u0219i asigur\u0103 continuitatea spe\u021bei umane.<\/p>\n<p>Desenul urm\u0103tor d\u0103 de altfel o reprezentare a ADN-ului cu structura sa \u00een dubl\u0103 elice si lan\u021bul de zaharuri-fosfa\u021bi. Mesajul dezv\u0103luie \u0219i schi\u021ba unui p\u0103m\u00e2ntean, cu dimensiunile indicate \u00een multiplii lungimii de und\u0103 a emisiei (deci 14 x 12.6 cm, 1,761 metri). La st\u00e2nga omului, \u00eentr-un alt &#8222;rebus&#8221;, este indicat num\u0103rul fiin\u021belor umane care tr\u0103iesc pe glob, adic\u0103 vreo 4 miliarde (la nivelul anului 1974). Dedesubt, o schem\u0103 a sistemului solar cu cele 9 planete (atunci, Pluto era considerat a 9-a planet\u0103, azi e considerat doar o &#8222;planet\u0103 pitic\u0103&#8221;). A treia planet\u0103 poate fi identificat\u0103 ca cea locuit\u0103 de cei ce au trimis mesajul. \u00cen final, jos, se d\u0103 \u0219i o schi\u021b\u0103 a antenei de la Arecibo. Se sugereaz\u0103 succint tehnica de emisie prin reflexia pe o suprafa\u021b\u0103 parabolic\u0103. \u0218i sub desen se g\u0103sesc dimensiunile antenei.<\/p>\n<p>Acest mesaj a fost lansat \u00een mai pu\u021bin de 3 minute. Dar vor fi necesari 24.000 de ani undelor radio pentru a transporta modula\u021bia de frecven\u021b\u0103 p\u00e2n\u0103 la Messier 13. Or, dac\u0103 ar fi dup\u0103 calculul probabil f\u0103cut de cercet\u0103torul Carl Sagan, conform c\u0103ruia ar exista \u00een galaxia noastr\u0103 1.000.000 de civiliza\u0163ii extraterestre avansate, aglomerarea globular\u0103 M13, cu cele 300 000 de stele, ofer\u0103 o \u0219ans\u0103 sau dou\u0103 de a g\u0103si o civiliza\u021bie capabil\u0103 s\u0103 primeasc\u0103 \u0219i s\u0103 interpreteze mesajul.<\/p>\n<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-85631\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo.jpg\" alt=\"\" width=\"186\" height=\"557\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo.jpg 186w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2023\/05\/mesajul-de-la-Arecibo-100x300.jpg 100w\" sizes=\"auto, (max-width: 186px) 100vw, 186px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00cen 1974, uria\u0219a anten\u0103 de la Arecibo, instalat\u0103 \u00een craterul unui vulcan stins, \u00een insula Puerto Rico, a lansat un mesaj extraterestru la uluitoarea distan\u021b\u0103 de 24.000 de ani-lumin\u0103, adic\u0103 la de vreo 24.060 de ori zece mii de miliarde &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Din secretul &#8222;mesajului Arecibo&#8221; trimis \u00een 1974 \u00een spa\u0163iul extraterestru, la 24.000 de ani-lumin\u0103 distan\u0163\u0103\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/din-secretul-mesajului-arecibo-trimis-in-1974-in-spatiul-extraterestru-la-24-000-de-ani-lumina-distanta\/#more-85630\" aria-label=\"Cite\u0219te mai multe despre Din secretul &#8222;mesajului Arecibo&#8221; trimis \u00een 1974 \u00een spa\u0163iul extraterestru, la 24.000 de ani-lumin\u0103 distan\u0163\u0103\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":85632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11039],"tags":[415,4718,6571,102,4401,3481,3144,1027,3459,11846,51,1334,433,2635,1784,11891,2170,6770,1830,1692,732,4858,2922,3492,3417,3175,23,434,298,9618],"class_list":["post-85630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","tag-adn","tag-antena","tag-arecibo","tag-astronomie","tag-azot","tag-carbon","tag-carl-sagan","tag-civilizatie","tag-crater","tag-drake","tag-extraterestri","tag-fosfor","tag-galaxie","tag-hidrogen","tag-insula","tag-kardashev","tag-mesaj","tag-messier-13","tag-om","tag-oxigen","tag-planeta","tag-planeta-pitica","tag-pluto","tag-puerto-rico","tag-sistem-solar","tag-stele","tag-sua","tag-telescop","tag-urss","tag-zaharuri","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>Din secretul &quot;mesajului Arecibo&quot; trimis \u00een 1974 \u00een spa\u0163iul extraterestru, la 24.000 de ani-lumin\u0103 distan\u0163\u0103 - 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\/din-secretul-mesajului-arecibo-trimis-in-1974-in-spatiul-extraterestru-la-24-000-de-ani-lumina-distanta\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Din secretul &quot;mesajului Arecibo&quot; trimis \u00een 1974 \u00een spa\u0163iul extraterestru, la 24.000 de ani-lumin\u0103 distan\u0163\u0103\" \/>\n<meta property=\"og:description\" content=\"\u00cen 1974, uria\u0219a anten\u0103 de la Arecibo, instalat\u0103 \u00een craterul unui vulcan stins, \u00een insula Puerto Rico, a lansat un mesaj extraterestru la uluitoarea distan\u021b\u0103 de 24.000 de ani-lumin\u0103, adic\u0103 la de vreo 24.060 de ori zece mii de miliarde ... 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