Traces of clay found in Martian rock tested by Curiosity rover
Melbourne: NASA`s Curiosity rover which is testing Mars rock, has found traces of clay - that points to a watery past.
At a briefing at NASA`s Washington headquarters, NASA scientists have revealed that the rock contains clay minerals that formed in a watery environment - an environment that may be favourable for microscopic organisms, the Daily Telegraph reported.
Curiosity that made a dramatic landing near the Mars equator last August for a two-year mission had already found a hint of the planet`s watery past - an ancient streambed that the six-wheel rover crossed to get to the flat bedrock.
It is the first spacecraft sent to Mars that could collect a sample from deep inside a rock.
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