{"id":240,"date":"2021-01-15T21:00:23","date_gmt":"2021-01-15T19:00:23","guid":{"rendered":"http:\/\/www.cosmoespai.com\/cat\/?p=240"},"modified":"2021-01-15T21:00:23","modified_gmt":"2021-01-15T19:00:23","slug":"lorigen-i-la-formacio-del-cinturo-dasteroides","status":"publish","type":"post","link":"https:\/\/www.cosmoespai.com\/cat\/lorigen-i-la-formacio-del-cinturo-dasteroides\/","title":{"rendered":"L\u2019origen i la formaci\u00f3 del cintur\u00f3 d\u2019asteroides"},"content":{"rendered":"\n<p class=\"has-text-align-justify\">El sistema solar est\u00e0 format per una quantitat enorme de cossos celestes. A part dels 8 planetes que orbiten el Sol, tamb\u00e9 hi ha una gran quantitat de cossos menors agrupats en grans sistemes. Distingim tres sistemes d\u2019asteroides al sistema solar: el n\u00favol de Oort, el cintur\u00f3 de Kuiper i el cintur\u00f3 d\u2019asteroides. Aquest \u00faltim \u00e9s el m\u00e9s proper a la Terra de tots ells.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">El cintur\u00f3 d\u2019asteroides est\u00e0 situat entre les \u00f2rbites de Mart i J\u00fapiter. Si b\u00e9 no sabem del cert com es va formar, existeixen diferents hip\u00f2tesis sobre el seu origen i la seva formaci\u00f3, fa 4,5 mil milions d\u2019anys.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>La seva formaci\u00f3<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Hi ha moltes hip\u00f2tesis sobre la formaci\u00f3 del cintur\u00f3 d\u2019asteroides, que est\u00e0 format per uns 960 000 asteroides, entre els quals alguns posseeixen els seus propis sat\u00e8l\u00b7lits. Uns 18 000 asteroides tenen nom, i uns 95 000 s\u2019identifiquen amb n\u00fameros. Existeixen dos hip\u00f2tesis principals sobre la seva formaci\u00f3.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">Alguns cient\u00edfics pensen que la formaci\u00f3 del cintur\u00f3 d\u2019asteroides va ser deguda a la destrucci\u00f3, per les forces gravitat\u00f2ries de J\u00fapiter, d\u2019un planeta que es va formar entre les \u00f2rbites de Mart i J\u00fapiter. Com a resultat, les restes es van dispersar per la seva \u00f2rbita, formant el que avui en dia coneixem com a cintur\u00f3 d\u2019asteroides.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">L\u2019altra teoria planteja que, degut tamb\u00e9 a les forces gravitat\u00f2ries de J\u00fapiter, es tractava d\u2019un planeta que no es va acabar de formar. Segons aquesta teoria, no es va formar cap planeta, sin\u00f3 que se\u2019n tenia que formar un, per\u00f2 les forces gravitat\u00f2ries de J\u00fapiter li ho van impedir.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><em><u><strong>El seu origen<\/strong><\/u><\/em><\/h4>\n\n\n\n<p class=\"has-text-align-justify\">Al principi, el sistema solar era una nebulosa primitiva composta principalment per gas i pols. La nebulosa va col\u00b7lapsar i va anar formant un disc que va comen\u00e7ar a girar. A les zones m\u00e9s allunyades del centre (en aquest centre \u00e9s on es va formar el Sol), es van formar petits grans de roques i pols, que amb el temps es van anar agrupant fins al punt de formar planetes. Molts d\u2019aquests grups de roques no es van poder ajuntar amb d\u2019altres, pel que es van quedar com a asteroides a\u00efllats.<\/p>\n\n\n\n<p class=\"has-text-align-justify\">En el passat, on avui en dia hi ha el cintur\u00f3 d\u2019asteroides, hi havia molts m\u00e9s asteroides, per\u00f2 la major part d\u2019ells es van veure expulsats a les afores del sistema solar, majorit\u00e0riament al que es coneix com a n\u00favol d\u2019Oort. Es creu que avui en dia nom\u00e9s queda un 0,1% d\u2019asteroides dels que hi havia hagut en el passat.<\/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\/2020\/11\/06\/els-satellits-de-jupiter-una-gran-familia\/\">Els sat\u00e8l\u00b7lits de J\u00fapiter, una gran fam\u00edlia<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/06\/23\/com-es-va-formar-la-lluna\/\">Com es va formar la Lluna?<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.cosmoespai.com\/cat\/2020\/08\/26\/la-cara-fosca-de-la-lluna-que-es-el-que-shi-amaga\/\">La cara fosca de la Lluna. Qu\u00e8 \u00e9s el que s\u2019hi amaga?<\/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\/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\/2020\/11\/28\/quantes-estrelles-hi-ha-a-la-via-lactia\/\">Quantes estrelles hi ha a la Via L\u00e0ctia?<\/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 sistema solar est\u00e0 format per una quantitat enorme de cossos celestes. A part dels 8 planetes que orbiten el Sol, tamb\u00e9 hi ha una<span class=\"read-more-link\"><a class=\"read-more\" href=\"https:\/\/www.cosmoespai.com\/cat\/lorigen-i-la-formacio-del-cinturo-dasteroides\/\">Continuar llegint<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":241,"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":[228],"tags":[229,71,230],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/01\/Formaci\u00f3_Cintur\u00f3Asteroides.jpg?fit=720%2C405","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":259,"url":"https:\/\/www.cosmoespai.com\/cat\/que-conte-el-cinturo-dasteroides\/","url_meta":{"origin":240,"position":0},"title":"Qu\u00e8 cont\u00e9 el cintur\u00f3 d\u2019asteroides?","author":"Ferran","date":"12 de febrer de 2021","format":false,"excerpt":"El cintur\u00f3 d\u2019asteroides est\u00e0 situat entre les \u00f2rbites de Mart i J\u00fapiter, i s\u2019ha estudiat molt des de la seva descoberta al 1766. Sabem que el cintur\u00f3 d\u2019asteroides est\u00e0 compost per molts cossos celestes. Ja s\u2019han identificat molts d\u2019aquests cossos celestes, i una bona part d\u2019ells ja tenen un nom.\u2026","rel":"","context":"A &quot;Cintur\u00f3 d'Asteroides&quot;","block_context":{"text":"Cintur\u00f3 d'Asteroides","link":"https:\/\/www.cosmoespai.com\/cat\/category\/cinturo-dasteroides\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/02\/Cintur\u00f3Asteroides_Qu\u00e8Cont\u00e9.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/02\/Cintur\u00f3Asteroides_Qu\u00e8Cont\u00e9.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/02\/Cintur\u00f3Asteroides_Qu\u00e8Cont\u00e9.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/02\/Cintur\u00f3Asteroides_Qu\u00e8Cont\u00e9.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":325,"url":"https:\/\/www.cosmoespai.com\/cat\/quina-mida-tenen-els-asteroides\/","url_meta":{"origin":240,"position":1},"title":"Quina mida tenen els asteroides?","author":"Ferran","date":"23 d'abril de 2021","format":false,"excerpt":"Els asteroides es concentren majorit\u00e0riament en llocs concrets del sistema solar, com el conegut cintur\u00f3 d\u2019asteroides, el cintur\u00f3 de Kuiper (m\u00e9s enll\u00e0 de l\u2019\u00f2rbita de Nept\u00fa), i el n\u00favol d\u2018Oort, que cont\u00e9 milers de milions de cometes i asteroides, alguns del quals, de tant en tant, s\u2019apropen a la Terra\u2026","rel":"","context":"A &quot;Cintur\u00f3 d'Asteroides&quot;","block_context":{"text":"Cintur\u00f3 d'Asteroides","link":"https:\/\/www.cosmoespai.com\/cat\/category\/cinturo-dasteroides\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/04\/Mida_Asteroides.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/04\/Mida_Asteroides.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/04\/Mida_Asteroides.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/04\/Mida_Asteroides.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":768,"url":"https:\/\/www.cosmoespai.com\/cat\/com-es-formen-els-forats-negres\/","url_meta":{"origin":240,"position":2},"title":"Com es formen els forats negres?","author":"Ferran","date":"23 d'octubre de 2022","format":false,"excerpt":"Els forats negres s\u00f3n uns dels objectes m\u00e9s intrigants i misteriosos del cosmos. Aquests cossos s\u00f3n un lloc a l\u2019espai on la gravetat \u00e9s tan forta que ni tan sols la llum en pot escapar. Com que res pot anar m\u00e9s r\u00e0pid que la llum, aix\u00f2 vol dir que no\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\/10\/Formaci\u00f3_ForatsNegres.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/10\/Formaci\u00f3_ForatsNegres.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/10\/Formaci\u00f3_ForatsNegres.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/10\/Formaci\u00f3_ForatsNegres.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":252,"url":"https:\/\/www.cosmoespai.com\/cat\/lexplotacio-minera-al-cinturo-dasteroides-una-font-de-recursos\/","url_meta":{"origin":240,"position":3},"title":"L\u2019explotaci\u00f3 minera al cintur\u00f3 d\u2019asteroides, una font de recursos","author":"Ferran","date":"29 de gener de 2021","format":false,"excerpt":"Al cintur\u00f3 d\u2019asteroides s\u2019hi amaguen moltes riqueses, entre les quals s\u2019hi troben minerals, alguns dels quals s\u00f3n molt escassos a la Terra. L\u2019explotaci\u00f3 del cintur\u00f3 d\u2019asteroides pot ser el futur de l\u2019economia mundial. Per qu\u00e8 valen tant? Molts dels asteroides que cont\u00e9 el cintur\u00f3 d\u2019asteroides estan formats per minerals rocosos,\u2026","rel":"","context":"A &quot;Cintur\u00f3 d'Asteroides&quot;","block_context":{"text":"Cintur\u00f3 d'Asteroides","link":"https:\/\/www.cosmoespai.com\/cat\/category\/cinturo-dasteroides\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/01\/Explotaci\u00f3_MineraAst.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/01\/Explotaci\u00f3_MineraAst.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/01\/Explotaci\u00f3_MineraAst.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2021\/01\/Explotaci\u00f3_MineraAst.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":939,"url":"https:\/\/www.cosmoespai.com\/cat\/per-que-els-centres-de-les-galaxies-contenen-forats-negres\/","url_meta":{"origin":240,"position":4},"title":"Per qu\u00e8 els centres de les gal\u00e0xies contenen forats negres?","author":"Ferran","date":"11 de juny de 2023","format":false,"excerpt":"Des dels anys 60 se sap que la majoria de les gal\u00e0xies contenen un forat negre al seu centre. Aquests forats negres tenen masses de l\u2019ordre de milions de vegades la massa del Sol, i s\u2019anomenen forats negres supermassius. Els primers forats negres d\u2019aquest tipus es van descobrir gr\u00e0cies als\u2026","rel":"","context":"A &quot;Gal\u00e0xies&quot;","block_context":{"text":"Gal\u00e0xies","link":"https:\/\/www.cosmoespai.com\/cat\/category\/galaxies\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/PerQue_GalaxiesTenenForatsNegres.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/PerQue_GalaxiesTenenForatsNegres.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/PerQue_GalaxiesTenenForatsNegres.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2023\/06\/PerQue_GalaxiesTenenForatsNegres.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]},{"id":619,"url":"https:\/\/www.cosmoespai.com\/cat\/com-es-van-formar-els-anells-de-saturn\/","url_meta":{"origin":240,"position":5},"title":"Com es van formar els anells de Saturn?","author":"Ferran","date":"29 d'abril de 2022","format":false,"excerpt":"Saturn \u00e9s el planeta del sistema solar que t\u00e9 els anells m\u00e9s grans i vistosos. La sonda Cassini \u00e9s la sonda m\u00e9s recent que s\u2019ha enviat al planeta, i n\u2019hem rebut molta informaci\u00f3. Gr\u00e0cies a les sondes enviades a Saturn, sabem com es va formar el planeta i quines s\u00f3n\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\/04\/Formaci\u00f3_Anells_Saturn.jpg?fit=720%2C405&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Formaci\u00f3_Anells_Saturn.jpg?fit=720%2C405&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Formaci\u00f3_Anells_Saturn.jpg?fit=720%2C405&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.cosmoespai.com\/cat\/wp-content\/uploads\/2022\/04\/Formaci\u00f3_Anells_Saturn.jpg?fit=720%2C405&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/240"}],"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=240"}],"version-history":[{"count":1,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/240\/revisions"}],"predecessor-version":[{"id":242,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/posts\/240\/revisions\/242"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media\/241"}],"wp:attachment":[{"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/media?parent=240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/categories?post=240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cosmoespai.com\/cat\/wp-json\/wp\/v2\/tags?post=240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}