Sentences with phrase «ancient microbial activity»
This trace evidence of ancient microbial activity was found in pillow lavas at least 3.47 to 3.45 billion years old from the Barberton Greenstone Belt of South Africa.
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Gale crater is also thought to harbor clues of ancient water activity on the Martian surface, and one of Curiosity's primary tasks will be to root around for evidence that Mars is, or was, capable of supporting microbial life.