{"id":16147,"date":"2021-10-26T13:32:36","date_gmt":"2021-10-26T13:32:36","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16147"},"modified":"2021-10-26T13:32:36","modified_gmt":"2021-10-26T13:32:36","slug":"asteroid-bennu-close-encounter-earth-2182","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/ro\/science\/astronomy\/asteroid-bennu-close-encounter-earth-2182\/","title":{"rendered":"Asteroidul Bennu: \u00cent\u00e2lnire apropiat\u0103 cu P\u0103m\u00e2ntul \u00een 2182"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Asteroidul Bennu: \u00cent\u00e2lnire apropiat\u0103 cu P\u0103m\u00e2ntul \u00een 2182<\/h2>\n\n<h2 class=\"wp-block-heading\">Asteroidul Bennu<\/h2>\n\n<p>Asteroidul Bennu, un corp ceresc cu o l\u0103\u0163ime de o jum\u0103tate de mil\u0103, se afl\u0103 \u00een prezent la aproximativ 190 de milioane de mile de P\u0103m\u00e2nt. Oamenii de \u015ftiin\u0163\u0103 au calculat c\u0103 Bennu se va apropia de planeta noastr\u0103 pe 24 septembrie 2182.<\/p>\n\n<h2 class=\"wp-block-heading\">Probabilitatea impactului<\/h2>\n\n<p>De\u015fi probabilitatea este mic\u0103, exist\u0103 o \u015fans\u0103 ca Bennu s\u0103 se ciocneasc\u0103 de P\u0103m\u00e2nt. Oamenii de \u015ftiin\u0163\u0103 \u00eei dau o \u015fans\u0103 de impact de una la 1.175 (0,0037%).<\/p>\n\n<h2 class=\"wp-block-heading\">Factori care afecteaz\u0103 traiectoria lui Bennu<\/h2>\n\n<p>Traiectoria asteroidului ar putea fi afectat\u0103 de diver\u015fi factori, inclusiv:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>O trecere \u00een apropiere \u00een 2135<\/li>\n<li>For\u0163ele gravita\u0163ionale ale soarelui, P\u0103m\u00e2ntului \u015fi lunii<\/li>\n<li>Efectul Yarkovsky, \u00een care asteroizii accelereaz\u0103 dup\u0103 ce absorb c\u0103ldur\u0103 de la soare<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Gaura de cheie gravita\u0163ional\u0103<\/h2>\n\n<p>\u00cen timp ce Bennu trece pe l\u00e2ng\u0103 P\u0103m\u00e2nt \u00een 2135, va trece printr-o gaur\u0103 de cheie gravita\u0163ional\u0103 care ar putea s\u0103-i schimbe traiectoria \u015fi s\u0103-l trimit\u0103 pe un curs de coliziune cu planeta noastr\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">Consecin\u0163ele poten\u0163iale ale impactului<\/h2>\n\n<p>Dac\u0103 Bennu ar lovi P\u0103m\u00e2ntul, ar putea crea un crater cu un diametru de cel pu\u0163in cinci kilometri, cu o zon\u0103 de devasta\u0163ie care se \u00eentinde p\u00e2n\u0103 la de 100 de ori acea dimensiune. Un impact asupra statelor de pe coasta de est ar putea avea consecin\u0163e catastrofale pentru \u00eentreaga coast\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">Ap\u0103rare planetar\u0103<\/h2>\n\n<p>Oamenii de \u015ftiin\u0163\u0103 subliniaz\u0103 c\u0103 nu exist\u0103 niciun motiv de \u00eengrijorare imediat\u0103. Poten\u0163ialul impact este \u00eenc\u0103 la 161 de ani distan\u0163\u0103, ceea ce ofer\u0103 suficient timp pentru monitorizare \u015fi poten\u0163iale eforturi de atenuare.<\/p>\n\n<h2 class=\"wp-block-heading\">Nava spa\u0163ial\u0103 OSIRIS-REx<\/h2>\n\n<p>Nava spa\u0163ial\u0103 OSIRIS-REx a NASA a aterizat pe Bennu \u00een 2018 \u015fi a colectat date valoroase care i-au ajutat pe oamenii de \u015ftiin\u0163\u0103 s\u0103-\u015fi rafineze calculele privind amenin\u0163area asteroidului la adresa P\u0103m\u00e2ntului.<\/p>\n\n<h2 class=\"wp-block-heading\">Monitorizare continu\u0103<\/h2>\n\n<p>Oamenii de \u015ftiin\u0163\u0103 continu\u0103 s\u0103 urm\u0103reasc\u0103 traiectoria lui Bennu \u00eendeaproape. Vor folosi aceste informa\u0163ii pentru a lua decizii informate cu privire la poten\u0163ialele strategii de atenuare, dac\u0103 este necesar.<\/p>\n\n<h2 class=\"wp-block-heading\">Cooperare interna\u0163ional\u0103<\/h2>\n\n<p>Sunt \u00een curs de desf\u0103\u015furare eforturi interna\u0163ionale pentru a atenua riscurile reprezentate de obiectele din apropierea P\u0103m\u00e2ntului, cum ar fi Bennu. Oamenii de \u015ftiin\u0163\u0103 \u015fi inginerii din \u00eentreaga lume colaboreaz\u0103 la cercetare \u015fi dezvoltarea de tehnologii pentru a devia sau distruge asteroizi care reprezint\u0103 o amenin\u0163are pentru planeta noastr\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">Implica\u0163ii pe termen lung<\/h2>\n\n<p>Poten\u0163ialul impact al lui Bennu serve\u015fte ca o reamintire a importan\u0163ei ap\u0103r\u0103rii planetare. Prin \u00een\u0163elegerea riscurilor reprezentate de asteroizi \u015fi prin investirea \u00een cercetare \u015fi eforturi de atenuare, putem contribui la asigurarea siguran\u0163ei planetei noastre \u015fi a genera\u0163iilor viitoare.<\/p>","protected":false},"excerpt":{"rendered":"<p>Asteroidul Bennu: \u00cent\u00e2lnire apropiat\u0103 cu P\u0103m\u00e2ntul \u00een 2182 Asteroidul Bennu Asteroidul Bennu, un corp ceresc cu o l\u0103\u0163ime de o jum\u0103tate de mil\u0103, se afl\u0103 \u00een prezent la aproximativ 190&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[21425,17652,434,21424],"class_list":["post-16147","post","type-post","status-publish","format-standard","hentry","category-astronomy","tag-planetary-defense","tag-asteroid-bennu","tag-space-exploration","tag-near-earth-objects"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/comments?post=16147"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16147\/revisions"}],"predecessor-version":[{"id":16148,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/16147\/revisions\/16148"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media?parent=16147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/categories?post=16147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/tags?post=16147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}