New Delhi: The Curiosity rover has found the best evidence yet that Mars was once a habitable planet.
The rover made the discovery by collecting rock samples using its on-board drilling tool and analyzing them using its science instruments.
What it found was that the rock contained clay minerals, a clear indication of the presence of neutral water.
Ultimately the discovery suggests that at some point in the past there were at least some areas of Mars capable of supporting life as we know it.
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