{"id":530,"date":"2022-01-07T16:40:45","date_gmt":"2022-01-07T14:40:45","guid":{"rendered":"http:\/\/www.cosmoespai.com\/cat\/?p=530"},"modified":"2022-01-07T14:20:59","modified_gmt":"2022-01-07T12:20:59","slug":"el-big-crunch-quan-tot-torni-al-comencament","status":"publish","type":"post","link":"https:\/\/www.cosmoespai.com\/cat\/el-big-crunch-quan-tot-torni-al-comencament\/","title":{"rendered":"El Big Crunch: Quan tot torni al comen\u00e7ament"},"content":{"rendered":"\n<p class=\"has-text-align-justify\">El Big Crunch, a l\u2019igual que el Big Freeze o el Big Rip, dels quals parlar\u00e9 en propers articles, \u00e9s una teoria que especula sobre com podria ser la mort de l\u2019univers. Tamb\u00e9 podr\u00edem dir que \u00e9s la teoria oposada al Big Bang.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>En qu\u00e8 consisteix la teoria?<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">La teoria del Big Crunch proposa un univers tancat, \u00e9s a dir, un univers que no \u00e9s infinit, amb una gran quantitat de mat\u00e8ria. En aquest univers, la gravetat provocada per la pr\u00f2pia mat\u00e8ria, podria frenar el proc\u00e9s d\u2019expansi\u00f3 de l\u2019univers, detindre\u2019l, i conseg\u00fcentment invertir-lo.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">D\u2019aquesta manera, l\u2019univers es comprimiria i es condensaria, pel que la mat\u00e8ria continguda s\u2019acabaria concentrant en un sol punt (una singularitat), similar a l\u2019existent abans del Big Bang.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">En altres paraules, la gravetat impediria l\u2019expansi\u00f3 del cosmos, pel que aquest es comen\u00e7aria a encongir, per finalment concentrar tota la mat\u00e8ria en un \u00fanic punt de l\u2019espai-temps.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>El proc\u00e9s del Big Crunch<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Segons la teoria del Big Crunch, d\u2019aqu\u00ed a uns 20 000 milions d\u2019anys, tota la mat\u00e8ria present a l\u2019univers for\u00e7aria l\u2019univers a frenar i invertir la seva expansi\u00f3. Aix\u00ed, les gal\u00e0xies que avui en dia veiem que s\u2019allunyen comen\u00e7arien a retrocedir, i, amb el temps, xocarien unes amb les altres.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Les temperatures augmentarien dr\u00e0sticament a mesura que les estrelles i gal\u00e0xies s\u2019apropessin cada cop m\u00e9s. Al final, totes es fondrien en un \u00fanic punt incre\u00efblement calent. L\u2019univers hauria tornat a l\u2019estat en que es trobava abans del Big Bang.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Segons algunes teories, en aquest moment es podria produir el que s\u2019anomena \u00abBig Bounce\u00bb, \u00e9s a dir, es podria produir un nou \u00abBig Bang\u00bb. Si fos aix\u00ed, aquest proc\u00e9s es podria repetir de manera infinita.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>Observacions actuals<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">L\u2019observaci\u00f3 de la llum de les estrelles i gal\u00e0xies ens mostra que aquestes s\u2019estan allunyant de nosaltres. Aix\u00f2 demostra que l\u2019univers s\u2019est\u00e0 expandint. A m\u00e9s, com ja sabem des de fa unes d\u00e8cades, aquesta expansi\u00f3 no nom\u00e9s s\u2019est\u00e0 produint, sin\u00f3 que ho fa a un ritme accelerat.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Aix\u00f2 sembla contradir el que proposa la teoria del Big Crunch, pel que molts cient\u00edfics ja la consideren obsoleta.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><strong>Entrades Similars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/per-que-lespai-es-negre-si-hi-ha-tantes-estrelles\/\">Per qu\u00e8 l\u2019espai \u00e9s negre, si hi ha tantes estrelles?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/que-es-la-velocitat-descapament\/\"><\/a><a href=\"http:\/\/www.cosmoespai.com\/cat\/quins-son-els-elements-originaris-del-big-bang\/\">Quins s\u00f3n els elements originaris del Big Bang?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/les-quatre-forces-fonamentals-de-lunivers\/\">Les quatre forces fonamentals de l\u2019univers<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/es-possible-la-vida-al-voltant-de-nanes-vermelles\/\">\u00c9s possible la vida al voltant de nanes vermelles?<\/a><\/p>\n\n\n\n<p><strong>Entrades Populars:<\/strong><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/09\/09\/perque-la-lluna-nomes-ens-ensenya-una-cara\/\">Perqu\u00e8 la Lluna nom\u00e9s ens ensenya una cara?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/12\/11\/stephenson-2-18-lestrella-mes-gran-coneguda-a-lunivers\/\">Stephenson 2-18, l\u2019estrella m\u00e9s gran coneguda a l\u2019univers<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/01\/29\/lexplotacio-minera-al-cinturo-dasteroides-una-font-de-recursos\/\">L\u2019explotaci\u00f3 minera al cintur\u00f3 d\u2019asteroides, una font de recursos<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/02\/05\/la-brossa-espacial-un-gran-problema\/\">La brossa espacial, un gran problema<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/05\/14\/com-es-van-extingir-els-dinosaures\/\">Com es van extingir els dinosaures?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/04\/09\/que-passaria-si-la-terra-deixes-de-rotar\/\">Qu\u00e8 passaria si la Terra deix\u00e9s de rotar?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/02\/19\/la-missio-a-venus-de-la-sonda-venus-express-per-la-esa\/\">La missi\u00f3 a Venus de la sonda Venus Express per la ESA<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/01\/08\/quins-son-els-requisits-per-a-ser-un-planeta\/\">Quins s\u00f3n els requisits per a ser un planeta?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/01\/01\/perque-no-es-poden-sentir-sons-a-lespai\/\">Perqu\u00e8 no es poden sentir sons a l\u2019espai?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/10\/10\/quina-mida-i-forma-tindrien-els-extraterrestres\/\">Quina mida i forma tindrien els extraterrestres?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2021\/04\/02\/les-unitats-de-mesura-que-fem-servir-en-astronomia\/\">Les unitats de mesura que fem servir en astronomia<\/a><\/p>\n\n\n\n<p><strong>Entrades Recents:<\/strong><\/p>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/com-viatjar-al-futur-sense-violar-les-lleis-de-la-fisica\/\">Com Viatjar al Futur Sense Violar les Lleis de la F\u00edsica<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-la-gravetat\/\">Qu\u00e8 \u00e9s la gravetat?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-hi-ha-mes-materia-que-antimateria-a-lunivers\/\">Per qu\u00e8 hi ha m\u00e9s mat\u00e8ria que antimat\u00e8ria a l\u2019univers?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/que-es-lantimateria\/\">Qu\u00e8 \u00e9s l\u2019antimat\u00e8ria?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.cosmoespai.com\/cat\/per-que-els-centres-de-les-galaxies-contenen-forats-negres\/\">Per qu\u00e8 els centres de les gal\u00e0xies contenen forats negres?<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>El Big Crunch, a l\u2019igual que el Big Freeze o el Big Rip, dels quals parlar\u00e9 en propers articles, \u00e9s una teoria que especula sobre<span class=\"read-more-link\"><a class=\"read-more\" href=\"https:\/\/www.cosmoespai.com\/cat\/el-big-crunch-quan-tot-torni-al-comencament\/\">Continuar llegint<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":531,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":""},"categories":[6],"tags":[54,506,443,57,508,491,507,55],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Crunch.jpg?fit=720%2C405","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":543,"url":"https:\/\/www.cosmoespai.com\/cat\/que-proposa-la-teoria-del-big-rip\/","url_meta":{"origin":530,"position":0},"title":"Qu\u00e8 proposa la teoria del Big Rip?","author":"Ferran","date":"29 de gener de 2022","format":false,"excerpt":"A l\u2019igual que el Big Crunch i el Big Freeze, el Big Rip \u00e9s una teoria que especula sobre com podria ser la mort de l\u2019univers. A difer\u00e8ncia de les primeres dos teories, que depenen de la densitat de mat\u00e8ria a l\u2019univers, la teoria del Big Rip, proposada per Robert\u2026","rel":"","context":"A &quot;Univers&quot;","block_context":{"text":"Univers","link":"https:\/\/www.cosmoespai.com\/cat\/category\/univers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Rip.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Rip.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Rip.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Rip.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":540,"url":"https:\/\/www.cosmoespai.com\/cat\/el-big-freeze-la-mort-gelida-de-lunivers\/","url_meta":{"origin":530,"position":1},"title":"El Big Freeze: la mort g\u00e8lida de l\u2019univers","author":"Ferran","date":"21 de gener de 2022","format":false,"excerpt":"Al llarg del temps, els cient\u00edfics han especulat sobre com podria ser la mort de l\u2019univers. Amb els nostres coneixements actuals de l\u2019univers, hem desenvolupat diverses teories que expliquen com morir\u00e0 el nostre univers. Una d\u2019elles \u00e9s l\u2019anomenat Big Freeze, que diu que el nostre univers no parar\u00e0 mai d\u2019expandir-se.\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/01\/Big_Freeze.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":560,"url":"https:\/\/www.cosmoespai.com\/cat\/com-sabem-que-lunivers-sesta-expandint\/","url_meta":{"origin":530,"position":2},"title":"Com sabem que l\u2019univers s\u2019est\u00e0 expandint?","author":"Ferran","date":"18 de febrer de 2022","format":false,"excerpt":"Des de fa d\u00e8cades sabem que l\u2019univers est\u00e0 en un proc\u00e9s d\u2019expansi\u00f3 accelerat. Aix\u00f2 vol dir que les gal\u00e0xies s\u2019allunyen les unes de les altres cada cop m\u00e9s r\u00e0pid. Si aquest proc\u00e9s continua indefinidament, arribar\u00e0 un moment en que les gal\u00e0xies s\u2019allunyaran tan r\u00e0pidament les unes de les altres (m\u00e9s\u2026","rel":"","context":"A &quot;Univers&quot;","block_context":{"text":"Univers","link":"https:\/\/www.cosmoespai.com\/cat\/category\/univers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Expansi\u00f3_Univers.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Expansi\u00f3_Univers.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Expansi\u00f3_Univers.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Expansi\u00f3_Univers.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":567,"url":"https:\/\/www.cosmoespai.com\/cat\/la-constant-cosmologica-el-major-error-deinstein\/","url_meta":{"origin":530,"position":3},"title":"La constant cosmol\u00f2gica: el major error d\u2019Einstein","author":"Ferran","date":"26 de febrer de 2022","format":false,"excerpt":"Malgrat l\u2019\u00e8xit que Einstein va tenir gr\u00e0cies a, entre altres, les teories de la relativitat general i especial, Einstein es va negar a acceptar la resposta que sortia de les matem\u00e0tiques. I \u00e9s que, a l\u2019igual que Friedman i Lema\u00eetre, Einstein s\u2019havia adonat que les equacions de la relativitat general\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Constant_Cosmol\u00f2gica.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Constant_Cosmol\u00f2gica.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Constant_Cosmol\u00f2gica.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/02\/Constant_Cosmol\u00f2gica.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":841,"url":"https:\/\/www.cosmoespai.com\/cat\/on-va-tenir-lloc-el-big-bang\/","url_meta":{"origin":530,"position":4},"title":"On va tenir lloc el Big Bang?","author":"Ferran","date":"22 de gener de 2023","format":false,"excerpt":"La teoria del Big Bang afirma que l\u2019univers va comen\u00e7ar en un estat extremadament dens i calent, i que s\u2019ha estat expandint i refredant des d\u2019aquell moment. No obstant, una de les concepcions err\u00f2nies que es t\u00e9 del Big Bang \u00e9s que va tenir lloc en un punt concret de\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/01\/OnVa_TenirLloc_BigBang.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/01\/OnVa_TenirLloc_BigBang.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/01\/OnVa_TenirLloc_BigBang.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/01\/OnVa_TenirLloc_BigBang.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":951,"url":"https:\/\/www.cosmoespai.com\/cat\/per-que-hi-ha-mes-materia-que-antimateria-a-lunivers\/","url_meta":{"origin":530,"position":5},"title":"Per qu\u00e8 hi ha m\u00e9s mat\u00e8ria que antimat\u00e8ria a l\u2019univers?","author":"Ferran","date":"8 de juliol de 2023","format":false,"excerpt":"Totes les part\u00edcules que formen la mat\u00e8ria al nostre voltant, com per exemple electrons, protons o neutrons, tenen versions equivalents en antimat\u00e8ria. Les part\u00edcules d\u2019antimat\u00e8ria, o antipart\u00edcules, s\u00f3n quasi id\u00e8ntiques a les part\u00edcules de mat\u00e8ria, per\u00f2 amb una c\u00e0rrega oposada. Per exemple, un electr\u00f3 t\u00e9 c\u00e0rrega negativa, i un positr\u00f3\u2026","rel":"","context":"A &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/www.cosmoespai.com\/cat\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/Univers_Dominat_Materia.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/Univers_Dominat_Materia.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/Univers_Dominat_Materia.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/07\/Univers_Dominat_Materia.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/530"}],"collection":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/comments?post=530"}],"version-history":[{"count":2,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":534,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/530\/revisions\/534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media\/531"}],"wp:attachment":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}