În acest studiu, cercetătorul francez contrazice teoria conform căreia oceanele şi atmosfera terestră s-au format datorită modificărilor chimice suferite de gazele vulcanice.
„Luna şi Pământul erau medii aride, lipsite de apă în perioada de imediat după naşterea satelitului nostru natural, în urma impactului Protopământului cu un asteroid gigantic sau chiar cu un alt planetoid. Apa a ajuns pe Terra mult mai târziu”, explică Francis Albarede.
Bazându-se pe o serie de calcule recente, Albarede afirmă că apa a ajuns pe Terra într-o perioadă situată între 80 şi 130 de milioane de ani, de la formarea sistemului solar. „O serie de asteroizi mari, cu orbite instabile, rămaşi după formarea sistemului solar, au fost atraşi de atracţia gravitaţională a planetelor mari gazoase, iar unii dintre ei s-au ciocnit cu Pământul. O parte dintre aceştia erau acoperiţi cu gheaţă, iar apa a ajuns în scoarţa terestră, infiltrându-se şi creând condiţiile pentru apariţia plăcilor tectonice, ce au avut un rol major în apariţia vieţii pe Pământ”, conform cercetătorului francez.
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