\nLuna se \u00eendep\u0103rteaz\u0103 lent de P\u0103m\u00e2nt \u00een fiecare an. NASA confirmp c\u0103 se retrage cu aproximativ 3,8 cm anual. Aceast\u0103 schimbare treptat\u0103 modific\u0103 subtil rota\u0163ia P\u0103m\u00e2ntului \u015fi durata zilei, potrivit DailyGalaxy.<\/p>\n
\nCeea ce pare o rela\u0163ie cosmic\u0103 stabil\u0103 este, de fapt, \u00een evolu\u0163ie. Pe parcursul a milioane de ani, efectul devine m\u0103surabil \u015fi semnificativ.<\/p>\n
\nOamenii de \u015ftiin\u0163\u0103 au descoperit c\u0103 zilele P\u0103m\u00e2ntului erau odinioar\u0103 mai scurte. Acum 70 de milioane de ani, o zi dura aproximativ 23,5 ore. Cercet\u0103torii au ajuns la aceast\u0103 concluzie analiz\u00e2nd liniile de cre\u015ftere din cochilii fosilizate.<\/p>\n
\nUn studiu din 2020 a analizat tipare zilnice microscopice \u00een bivalve antice. Fosilele arat\u0103 c\u0103 un an avea atunci aproximativ 372 de zile. Mai multe zile \u00eentr-un an indic\u0103 zile individuale mai scurte.<\/p>\n
\nDovezile sugereaz\u0103 c\u0103 Luna era mai aproape de P\u0103m\u00e2nt. For\u0163a sa gravita\u0163ional\u0103 mai puternic\u0103 accelera rota\u0163ia planetei.<\/p>\n
\nRetragerea Lunii este determinat\u0103 de for\u0163ele mareice. Gravita\u0163ia sa atrage oceanele P\u0103m\u00e2ntului, form\u00e2nd dou\u0103 zone de maree opuse. Acestea sunt u\u015for deviate fa\u0163\u0103 de pozi\u0163ia Lunii.<\/p>\n
\nAceast\u0103 deviere creeaz\u0103 un cuplu gravita\u0163ional \u00eentre cele dou\u0103 corpuri. Energia se transfer\u0103 din rota\u0163ia P\u0103m\u00e2ntului c\u0103tre orbita Lunii. Ca urmare, Luna c\u00e2\u015ftig\u0103 energie \u015fi se deplaseaz\u0103 pe o orbit\u0103 mai \u00eendep\u0103rtat\u0103.<\/p>\n
\nNASA descrie aceast\u0103 separare ca fiind comparabil\u0103 cu cre\u015fterea unghiilor. Distan\u0163a cre\u015fte cu aproximativ 3,8 cm pe an.<\/p>\n
\nPe m\u0103sur\u0103 ce Luna se \u00eendep\u0103rteaz\u0103, rota\u0163ia P\u0103m\u00e2ntului \u00eencetine\u015fte. Energia de rota\u0163ie se pierde treptat pe intervale de timp foarte lungi. Astfel, durata unei zile cre\u015fte cu frac\u0163iuni de secund\u0103.<\/p>\n
\nSchimbarea este imperceptibil\u0103 la scara unei vie\u0163i umane. \u00cens\u0103, pe parcursul a milioane de ani, efectul devine evident.<\/p>\n","protected":false},"excerpt":{"rendered":"
NASA confirm\u0103 c\u0103 Luna se \u00eendep\u0103rteaz\u0103 treptat de P\u0103m\u00e2nt. Ce arat\u0103 noile m\u0103sur\u0103tori \u015fi ce impact are acest proces pe termen lung?<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[62794,62795,347],"class_list":["post-245679","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-distanta-luna-pamant","tag-durata-zi","tag-nasa"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/245679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=245679"}],"version-history":[{"count":1,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/245679\/revisions"}],"predecessor-version":[{"id":245696,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/245679\/revisions\/245696"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=245679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=245679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=245679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}