{"id":1270,"date":"2020-05-08T17:54:47","date_gmt":"2020-05-08T17:54:47","guid":{"rendered":"https:\/\/mhf.ro\/mm\/?p=1270"},"modified":"2020-05-08T17:55:19","modified_gmt":"2020-05-08T17:55:19","slug":"singuri-in-univers","status":"publish","type":"post","link":"https:\/\/mhf.ro\/mm\/singuri-in-univers\/","title":{"rendered":"SINGURI \u00ceN UNIVERS"},"content":{"rendered":"<p><strong>\u00a0<\/strong><\/p>\n<p>Informa\u021biile despre Cosmos au \u00eent\u00e2ietate. Pentru mine&#8230; M\u0103 fascineaz\u0103 ideea c\u0103 s-ar putea s\u0103 fim singuri \u00een Univers sau m\u0103car \u00een partea asta de univers unde ne afl\u0103m \u015fi c\u0103reia \u00eei spunem Calea Lactee. Galaxia noastr\u0103.. Am numit-o a\u015fa pentru c\u0103 seam\u0103n\u0103 cu o spum\u0103 l\u0103ptoas\u0103 \u015fi are cam 100 de miliarde de ani lumin\u0103 \u00een diametru. Mai sunt miliarde de galaxii, cea mai apropiat\u0103 de noi fiind Andromeda, la 2.500.000 ani lumin\u0103 distan\u021b\u0103 de Calea Lactee. De neimaginat&#8230; C\u00e2ndva, peste miliarde de ani, cele dou\u0103 galaxii se vor ciocni. Atunci, \u00eens\u0103, specia uman\u0103 va fi disp\u0103rut probabil demult.<\/p>\n<p>Ne credem vesnici, dar nu ne g\u00e2ndim niciodat\u0103 c\u0103 totul are un sf\u00e2r\u015fit. Soarele mai are combustibil, adic\u0103 hidrogen, \u00eenc\u0103 vreo 4 miliarde de ani. Dup\u0103 aceea se va stinge.. Dar \u00eenainte de a se stinge, se va transforma \u00eentr-o gigantic\u0103 minge ro\u015fie \u015fi va \u00eenghi\u021bi mai \u00eent\u00e2i planetele telurice, adic\u0103 Mercur, Venus, P\u0103m\u00e2nt, Marte.<br \/>\nAm gasit ast\u0103zi \u00een Magazinul vechi o continuare a articolului \u00een care se vorbea despre paradoxul lui Fermi. Concret, \u00eentr-o pauz\u0103 de mas\u0103, c\u00e2\u015ftig\u0103torul Nobelului pentru fizica \u00ee\u015fi \u00eentreab\u0103 colegii &#8222;\u015fi totu\u015fi unde sunt ei?\u201d Se referea la extratere\u015ftri. Era la mod\u0103 atunci, \u00een anii 50, s\u0103 vorbe\u015fti despre asta, iar autorit\u0103\u021bile americane faceau tot posibilul s\u0103 ascund\u0103 experientele militare aviatice sau de alt\u0103 natur\u0103, intoxic\u00eend opinia public\u0103 cu basme despre OZN-uri \u015fi omule\u021bi colora\u021bi \u00een diverse feluri, preferabil verzi. Iar oamenii, avizi de senza\u021bional, atunci ca \u015fi acum, \u00eenghi\u021beau tot \u015fi \u00eenc\u0103 mai exist\u0103 \u015fi astazi diverse asocia\u021bii de tembeli care a\u015fteapt\u0103 venirea extratere\u015ftilor.<br \/>\n\u015ei totu\u015fi, se pare c\u0103 via\u021ba pe p\u0103m\u00e2nt are aproape 5 miliarde de ani de singur\u0103tate!<br \/>\nPentru c\u0103 altfel, dup\u0103 cum spune pardoxul Fermi, unde sunt? De ce n-au l\u0103sat niciun semn nic\u0103ieri? Exist\u0103 stele cu miliarde de ani mai vechi dec\u00e2t soarele nostru. O civiliza\u021bie cu doar 100 de ani mai avansat\u0103 ca a noastr\u0103 ar fi putut, chiar \u015fi la tehnica spa\u0163iala actual\u0103, s\u0103 colonizeze galaxia noastr\u0103 \u00een c\u00e2teva milioane de ani. Dac\u0103 ar fi supravie\u021buit at\u00e2t.<br \/>\n\u015ei atunci te-ntrebi dac\u0103 P\u0103mintul nu este singura lume locuit\u0103 \u00een \u00eentreaga galaxie. Poate c\u0103 saltul de la substan\u0163ele chimice complexe, la microbii agita\u021bi, este at\u00e2t de improbabil \u00eenc\u00eet s\u0103 se fi \u00eentimplat o singur\u0103 dat\u0103. Microbii au fost aici cu 3,8 miliarde de ani \u00een urm\u0103, poate chiar mai devreme. Dar chiar dac\u0103 microbii ar fi peste tot \u00een cosmos, via\u0163a inteligent\u0103 ar putea fi doar un vis frumos al nostru. Pentru c\u0103 nu sunt multe planete care pot oferi pe termen lung condi\u021bii similare evolu\u021biei unei inteligen\u021be complexe. De asemenea, p\u0103m\u00e2ntul beneficiaz\u0103 de o lun\u0103 mare care \u00eei stabilizeaz\u0103 \u00eenclinarea \u015fi, prin urmare climatul, \u015fi se mai bucur\u0103 \u015fi de protec\u021bia unei planete uriase, Jupiter, a c\u0103rei gravita\u021bie \u0163ine departe cometele periculoase. Nu exist\u0103 nicio s\u0103geat\u0103 de progres proprie evolu\u021biei. Selec\u0163ia natural\u0103 favorizeaz\u0103 orice func\u021bioneaz\u0103, deci dac\u0103 simplul este de succes, simplul functioneaz\u0103. Fosilele organismelor multicelulare nu se reg\u0103sesc p\u00e2na acum aproape 600 de milioane de ani, ceea ce \u00eenseamn\u0103 c\u0103 microbii cu o singur\u0103 celul\u0103 au avut planeta doar pentru ei \u00een\u015fi\u015fi timp de cel pu\u0163in 3 miliarde de ani.<br \/>\nA\u015fadar, ar fi nevoie de un set foarte special de circumstan\u021be pentru a se produce saltul de la nivelul vie\u0163ii simple, la punctul \u00een care oamenii suprainteligen\u0163i s\u0103 inventeze nave spa\u021biale, patine cu ro\u021bi \u015fi calculatoare. (<strong>Mitu Ion<\/strong>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 Informa\u021biile despre Cosmos au \u00eent\u00e2ietate. Pentru mine&#8230; M\u0103 fascineaz\u0103 ideea c\u0103 s-ar putea s\u0103 fim singuri \u00een Univers sau<\/p>\n","protected":false},"author":1,"featured_media":1271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[5],"tags":[],"class_list":["post-1270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-locale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SINGURI \u00ceN UNIVERS - MHF Photography<\/title>\n<meta name=\"description\" content=\"Ne credem vesnici, dar nu ne g\u00e2ndim niciodat\u0103 c\u0103 totul are un sf\u00e2r\u015fit. 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