{"id":32229,"date":"2019-06-24T07:30:36","date_gmt":"2019-06-24T04:30:36","guid":{"rendered":"https:\/\/serialreaders.com\/blog\/?p=32229"},"modified":"2019-06-23T21:33:03","modified_gmt":"2019-06-23T18:33:03","slug":"carl-sagan-si-povestea-firului-de-praf-suspendat-in-univers","status":"publish","type":"post","link":"https:\/\/serialreaders.com\/blog\/carl-sagan-si-povestea-firului-de-praf-suspendat-in-univers\/","title":{"rendered":"Carl Sagan \u0219i povestea firului de praf suspendat \u00een univers"},"content":{"rendered":"

C\u00e2ndva, demult, \u00een anii adolescen\u021bei, mi-a c\u0103zut \u00een m\u00e2ini unul dintre cele mai bune romane SF care trateaz\u0103 prima \u00eent\u00e2lnire cu o specie extraterestr\u0103, care e un subiect extrem de dezb\u0103tut, mai ales \u00een ultima jum\u0103tate de secol. Cartea se numea Contact<\/a> \u0219i pentru mine a fost prima \u00eent\u00e2lnire cu autorul acesteia, Carl Sagan, despre care nu \u0219tiam pe vremea aceea c\u0103 era mai mult dec\u00e2t un scriitor de fic\u021biune. Peste ani aveam s\u0103 aflu c\u0103 a fost (\u0219i este \u00eenc\u0103) unul dintre cei mai cunoscu\u021bi \u0219i aprecia\u021bi astronomi, astrofizicieni \u0219i cosmologi de pe mica noastr\u0103 planet\u0103. Planet\u0103 despre care Carl Sagan mi-a vorbit la a doua noastr\u0103 \u00eent\u00e2lnire – la mul\u021bi ani dup\u0103 prima – \u00eentr-una din c\u0103r\u021bile lui de popularizare a \u0219tiin\u021bei, Un palid punct albastru<\/a>. Am zis\u00a0carte de popularizare a \u0219tiin\u021bei? Nu, ce a scris Sagan e mai mult de at\u00e2t, el nu face o simpl\u0103 relatare \u0219tiin\u021bific\u0103 plin\u0103 de matematic\u0103 (de\u0219i se spune c\u0103 matematica e limbajul universului) \u0219i formule complicate, ci ne spune o poveste a P\u0103m\u00e2ntului \u0219i a explor\u0103rii spa\u021biului.<\/p>\n

Pentru noi este \u00eens\u0103 altceva. Privi\u021bi din nou acel punct. Este casa noastr\u0103. Suntem noi. Pe acesta \u0219i-au tr\u0103it \u0219i \u00ee\u0219i tr\u0103iesc via\u021ba to\u021bi cei pe care-i iube\u0219ti, to\u021bi cei pe care-i \u0219tii, to\u021bi cei despre care ai auzit \u0219i, p\u00e2n\u0103 la urm\u0103, toate fiin\u021bele umane care au existat. Acolo se afl\u0103 totalitatea bucuriilor \u0219i suferin\u021belor noastre, mii de religii, ideologii \u0219i doctrine economice \u00eencrez\u0103toare, fiecare v\u00e2n\u0103tor \u0219i culeg\u0103tor, fiecare erou \u0219i la\u0219, fiecare creator \u0219i distrug\u0103tor de civiliza\u021bie, fiecare rege \u0219i \u021b\u0103ran, fiecare t\u00e2n\u0103r\u0103 pereche \u00eendr\u0103gostit\u0103, fiecare mam\u0103 \u0219i tat\u0103, copil plin de speran\u021b\u0103, inventator \u0219i explorator, fiecare moralizator, fiecare politician corupt, fiecare “superstar”, fiecare “lider suprem”, fiecare sf\u00e2nt \u0219i p\u0103c\u0103tos din istoria speciei noastre a tr\u0103it acolo – pe un fir de praf suspendat \u00eentr-o raz\u0103 de soare.<\/span><\/p><\/blockquote>\n

\"\"<\/p>\n

Neil Armstrong, celebrul astronaut care a p\u0103\u0219it pe Lun\u0103 \u00een 1969, a rostit\u00a0\u00een momentul aseleniz\u0103rii nu mai pu\u021bin cunoscuta expresie \u201cUn pas mic pentru om, un salt uria\u0219 pentru omenire\u201d. Timpul a trecut de atunci, omenirea a mai f\u0103cut c\u00e2\u021biva pa\u0219i \u0219i astfel a \u00eenv\u0103\u021bat s\u0103 mearg\u0103. Iar aselenizarea cu echipaj uman a fost, \u00eentr-adev\u0103r, unul dintre cele mai importante salturi din istoria omenirii. Sigur, a avut \u00een mare m\u0103sur\u0103 un scop politic, \u00een contextul r\u0103zboiului rece \u0219i al rivalit\u0103\u021bii Statelor Unite ale Americii cu URSS-ul, dar \u0219i pentru avantajul dat de avansul tehnologic. \u0218i s\u0103 nu uit\u0103m c\u0103 ru\u0219ii au fost cei care au trimis primul om \u00een spa\u021biu, pe cosmonautul Iuri Gagarin. \u00cens\u0103 asta pu\u021bin conteaz\u0103 pentru scopul final, acela de a cuceri spa\u021biul \u00een calitatea de ras\u0103 uman\u0103, iar nu de na\u021biune. Dar primul contact cu satelitul nostru nu a fost \u0219i ultimul, dup\u0103 aventura din \u201869 au mai urmat nu mai pu\u021bin de 5 expedi\u021bii cu echipaj uman pe suprafa\u021ba lunar\u0103, ultima av\u00e2nd loc \u00een 1972. \u00cen ziua de azi programele spa\u021biale sunt extrem de costisitoare, de aceea NASA a sc\u0103zut num\u0103rul lans\u0103rilor \u0219i explorarea interplanetar\u0103 a fost pus\u0103 \u00een stand-by. Cu toate astea, un singur om nu s-a l\u0103sat descurajat de costurile enorme, un vizionar care a \u00een\u021beles c\u0103 viitorul omenirii st\u0103 \u00een stele: Elon Musk, un om pe care \u00eel\u00a0admir foarte mult, despre care colega mea Patricia a scris aici<\/a> dup\u0103 ce i-a citit biografia \u00eentocmit\u0103 de Ashlee Vance.<\/p>\n

\u0218i dac\u0103 tot vorbim despre explorarea sistemului solar, a galaxiilor \u0219i, de ce nu, a Universului, cred c\u0103 putem duce lucrurile pu\u021bin mai departe. \u00cen ultima vreme se tot vorbe\u0219te despre colonizarea altor planete ca fiind o solu\u021bie viabil\u0103 pentru suprapopulare, dar \u0219i pentru dezvoltarea rasei umane. De aceea,\u00a0\u00een 1977 au fost trimise sondele Voyager 1<\/a> \u0219i Voyager 2 \u00een \u00eendep\u0103rt\u0103rile sistemului solar, cu scopul de a explora \u0219i culege date. Nu sunt singurele sonde trimise, \u00eens\u0103 acestea cutreier\u0103 infinitul spa\u021biului de mai bine de 40 de ani \u0219i \u00eenc\u0103 adun\u0103 informa\u021bii. Aparent, cele mai bune candidate pentru colonizare din proximitatea planetei noastre ar fi Titan, cel mai mare satelit al planetei Saturn, despre care se crede c\u0103 are un mediu propice apari\u021biei vie\u021bii;\u00a0\u0219i Marte, supranumit\u0103 Planeta Ro\u0219ie.\u00a0Gra\u021bie lui Sagan \u0219i a realit\u0103\u021bii virtuale pe care o prefigureaz\u0103 (prin care datele trimise de pe Marte pe P\u0103m\u00e2nt vor recrea atmosfera \u0219i decorul mar\u021bian), am p\u0103\u0219it \u0219i eu, cu mici salturi datorate gravita\u021biei mai sc\u0103zute, pe planeta numit\u0103 dup\u0103 zeul r\u0103zboiului. Dar c\u00e2t de fezabil\u0103 ar fi explorarea ori colonizarea planetei Marte? Este un lucru util pentru omenire?<\/em> se \u00eentreab\u0103 Sagan. Un asemenea proiect nu e chiar a\u0219a u\u0219or de \u00eendeplinit, acesta ar implica costuri enorme, de ordinul sutelor de miliarde de dolari, pe l\u00e2ng\u0103 o logistic\u0103 foarte bine pus\u0103 la punct \u0219i sisteme de redundan\u021b\u0103 pentru orice fel de probleme ce ar putea ap\u0103rea. \u0218i oare aceste sume n-ar fi mai bine folosite pentru \u00eembun\u0103t\u0103\u021birea vie\u021bii pe P\u0103m\u00e2nt?<\/p>\n

\"\"<\/p>\n

V-a\u021bi g\u00e2ndit vreodat\u0103 cum arat\u0103 Terra v\u0103zut\u0103 din spa\u021biu? \u0218i nu ce se vede \u00een poze, ci pe viu, cu ochii vo\u0219tri. Eu o fac des, una dintre cele mai puternice dorin\u021be ale mele este s\u0103 v\u0103d planeta noastr\u0103 din \u00eentunericul dens al vidului ce umple cosmosul. Sagan face un exerci\u021biu de imagina\u021bie \u00een care propune s\u0103 ne g\u00e2ndim cum ar fi v\u0103zut\u0103 Terra din perspectiva unor presupu\u0219i vizitatori nimeri\u021bi \u00eent\u00e2mpl\u0103tor \u00een Calea Lactee, la care adaug\u0103 o condi\u021bie deosebit\u0103: ace\u0219tia nu au voie s\u0103 asolizeze. Oare acei ipotetici vizitatori ar detecta via\u021b\u0103, inteligent\u0103 sau nu, pe suprafa\u021ba planetei? Oare i-ar atrage cu ceva un at\u00e2t de mic corp ceresc, printre alte miliarde \u0219i miliarde de galaxii, stele \u0219i planete? Oare, oare… Ipotezele \u0219i teoriile lui Sagan referitor la acest subiect nu numai c\u0103 sunt foarte interesante, dar \u0219i credibile. \u0218i nu se opre\u0219te doar la asta, temele abordate sunt dintre cele mai diverse: de la credin\u021ba de acum c\u00e2teva sute de ani care sus\u021binea c\u0103 P\u0103m\u00e2ntul era plat; explica\u021bia diferen\u021bei dintre planetele joviene \u0219i cele terestre; atinge \u0219i subiectul SETI – transmiterea de mesaje cu ajutorul undelor radio c\u0103tre spa\u021biul nev\u0103zut dintre stele – care este \u0219i una dintre temele principale ale romanului men\u021bionat la \u00eenceput, p\u00e2n\u0103 la formarea Lunii \u0219i viitorul omenirii. \u0218i multe altele… Toate acestea formeaz\u0103 o poveste a trecutului \u0219i a prezentului, dar \u00een acela\u0219i timp ne prezint\u0103 cu un optimism c\u00e2t se poate de realist variante \u0219i scenarii diferite ale viitorului nostru, viitor \u00een care nu vom mai fi lega\u021bi de Terra, leag\u0103nul omenirii.<\/p>\n

\n

Marinari pe o mare calm\u0103, sim\u021bim c\u0103 se st\u00e2rne\u0219te briza.<\/p>\n<\/blockquote>\n

\n

Comand\u0103 cartea Un palid punct albastru
\npe\u00a0Cartepedia,\u00a0aici<\/a>, pe\u00a0, sau pe\u00a0Elefant, aici<\/a>, \u0219i v\u0103 a\u0219tept\u0103m la pove\u0219ti!<\/p>\n<\/blockquote>\n

SerialReaders.com\u00a0<\/i><\/b><\/span>folose\u0219te unelte de marketing afiliat. Cump\u0103r\u00e2nd prin link-urile pe care le recomand\u0103m, site-ul nostru prime\u0219te un comision din partea retailerilor pe care \u00eei promov\u0103m.<\/i><\/span><\/p>\n

Foto: Pixabay, Pinterest, arhiva personal\u0103<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e2ndva, demult, \u00een anii adolescen\u021bei, mi-a c\u0103zut \u00een m\u00e2ini unul dintre cele mai bune romane SF care trateaz\u0103 prima \u00eent\u00e2lnire cu o specie extraterestr\u0103, care e un subiect extrem de dezb\u0103tut, mai ales \u00een ultima jum\u0103tate de secol. Cartea se…<\/p>\n","protected":false},"author":24,"featured_media":32254,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4283],"tags":[4408,5320,1150,4276,76,3531,5354],"class_list":["post-32229","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recomandari","tag-carl-sagan","tag-carti-de-stiinta","tag-editura-herald","tag-featured","tag-serial-readers","tag-stiinta","tag-terra"],"acf":[],"yoast_head":"\nCarl Sagan \u0219i povestea firului de praf suspendat \u00een 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