Un valle en Marte revela pistas sobre un antiguo océano e inundaciones

Un vasto valle en Marte ofrece nuevas pruebas de que el planeta albergó en su día grandes masas de agua. Shalbatana Vallis se extiende a lo largo de unos 1.300 kilómetros cerca del ecuador y muestra signos de potentes inundaciones de agua subterránea hace miles de millones de años.

La sonda Mars Express de la Agencia Espacial Europea captó nuevas imágenes de la sección norte del valle. Estas vistas destacan profundos canales excavados por antiguas inundaciones, terreno colapsado y depósitos de ceniza volcánica. El canal principal mide alrededor de 10 kilómetros de ancho y hasta 500 metros de profundidad en algunos puntos.

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