Companii private au str\u00e2ns milioane pentru a bloca Soarele ca s\u0103 r\u0103ceasc\u0103 planeta. Ce ar putea merge prost? <\/a><\/p>\nMai mult, dou\u0103 dintre cele mai importante extinc\u021bii din istoria planetei au avut loc \u00een aceea\u0219i perioad\u0103 cu aceste erup\u021bii masive.<\/p>\n
Influen\u021ba orbitei P\u0103m\u00e2ntului \u0219i a galaxiei <\/p>\n
O alt\u0103 explica\u021bie analizat\u0103 de cercet\u0103tor are leg\u0103tur\u0103 cu varia\u021biile pe termen lung ale orbitei P\u0103m\u00e2ntului, care ar modifica distribu\u021bia ghe\u021bii, apei \u0219i sedimentelor, influen\u021b\u00e2nd tensiunile din scoar\u021ba terestr\u0103 \u0219i activitatea tectonic\u0103.<\/p>\n
Cea mai controversat\u0103 ipotez\u0103 implic\u0103 \u00eens\u0103 pozi\u021bia Sistemului Solar \u00een Calea Lactee.<\/p>\n
Pe parcursul a milioane de ani, Sistemul Solar oscileaz\u0103 deasupra \u0219i dedesubtul planului galaxiei, travers\u00e2nd zona central\u0103 aproximativ o dat\u0103 la 30 de milioane de ani.<\/p>\n
Rampino afirm\u0103 c\u0103 multe dintre marile evenimente geologice coincid cu aceste travers\u0103ri.<\/p>\n
Potrivit teoriei, gravita\u021bia stelelor din apropiere ar putea perturba obiectele din Norul Oort, cresc\u00e2nd probabilitatea ca un asteroid s\u0103 fie deviat spre interiorul Sistemului Solar \u0219i s\u0103 loveasc\u0103 P\u0103m\u00e2ntul.<\/p>\n
publicitate”); background-position: center center; background-repeat: no-repeat;”><\/p>\n
O alt\u0103 ipotez\u0103 presupune c\u0103, \u00een timpul travers\u0103rii planului galactic, planeta ar putea \u00eent\u00e2lni regiuni cu densitate mai mare de materie \u00eentunecat\u0103. Dac\u0103 aceste particule s-ar acumula \u00een nucleul P\u0103m\u00e2ntului, ele ar putea genera o eliberare uria\u0219\u0103 de c\u0103ldur\u0103, capabil\u0103 s\u0103 intensifice activitatea geologic\u0103 la scar\u0103 global\u0103.<\/p>\n
\u00cen lucrare, cercet\u0103torul estimeaz\u0103 c\u0103 energia eliberat\u0103 \u00eentr-un asemenea scenariu ar putea dep\u0103\u0219i de p\u00e2n\u0103 la 250 de ori fluxul actual de c\u0103ldur\u0103 provenit din interiorul P\u0103m\u00e2ntului.<\/p>\n
Ne apropiem de un nou ciclu? <\/p>\n
Profesorul Rampino observ\u0103 c\u0103 nou\u0103 dintre cele 13 extinc\u021bii majore cunoscute au avut loc la un interval de p\u00e2n\u0103 la \u0219ase milioane de ani fa\u021b\u0103 de traversarea planului galactic.<\/p>\n
Cum Sistemul Solar ar fi trecut prin aceast\u0103 regiune \u00een urm\u0103 cu aproximativ trei-patru milioane de ani, autorul sugereaz\u0103 c\u0103 urm\u0103torul episod de intens\u0103 activitate geologic\u0103 ar putea avea loc \u00een urm\u0103toarele dou\u0103 milioane de ani.<\/p>\n
Totu\u0219i, el subliniaz\u0103 c\u0103 aceast\u0103 concluzie trebuie privit\u0103 cu pruden\u021b\u0103.<\/p>\n
O ipotez\u0103 \u00eenc\u0103 disputat\u0103 <\/p>\n
Cercetarea nu ofer\u0103 dovezi directe c\u0103 aceste mecanisme provoac\u0103 marile catastrofe ale P\u0103m\u00e2ntului, iar teoriile privind influen\u021ba materiei \u00eentunecate sau a pozi\u021biei Sistemului Solar \u00een galaxie r\u0103m\u00e2n speculative.<\/p>\n
publicitate”); background-position: center center; background-repeat: no-repeat;”><\/p>\n
Autorul recunoa\u0219te c\u0103 explica\u021biile propuse sunt controversate \u0219i contrazic interpret\u0103rile geologice acceptate \u00een prezent, \u00eens\u0103 consider\u0103 c\u0103 ele ar putea deschide noi direc\u021bii de cercetare privind evolu\u021bia pe termen lung a planetei.<\/p>\n
Dac\u0103 ipoteza se va confirma, marile catastrofe naturale nu ar reprezenta evenimente complet \u00eent\u00e2mpl\u0103toare, ci manifest\u0103ri ale unui ciclu geologic \u0219i astronomic care modeleaz\u0103 P\u0103m\u00e2ntul de sute de milioane de ani.<\/p>\n
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