NASA's Curiosity rover has found wave-rippled rocks – evidence of an ancient lake – in an area of the planet expected to be drier, the US space agency said Wednesday.
, Curiosity's project scientist at NASA's Jet Propulsion Laboratory in California.since 2012, beamed back stunning pictures of rippled patterns on the surface of rocks caused by the waves of a shallow lake billions of years ago.in the salty minerals left behind when they dried up.
"We've climbed through many lake deposits during our mission but have never seen wave ripples this clearly," Vasavada"This was especially surprising because the area we're in probably formed at a time when Mars was becoming more dry," he said. "This landslide debris is probably the most recent evidence of water that we'll ever see," Vasavada said."It will allow us to study layers higher up on Mount Sharp that we can't reach."
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