Hace 4.500 millones de años, la atmósfera terrestre era semejante a la de Venus debido a los gases que escapaban del océano magmático que constituía la superficie de la Tierra, ha concluido un grupo de investigadores tras una serie de experimentos de laboratorio.
Según explican los científicos, en aquel tiempo un objeto del tamaño de Marte habría impactado contra la Tierra, liberando suficiente energía como para fundir el manto entero del planeta -la capa entre el núcleo y la corteza- y convertirlo en magma.








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