Salty Secrets

NASA's Mars Odyssey orbiter is reporting to have found evidence of salt deposits. Evidence of salt deposits? Meaning that they didn't actually find salt?
"They could come from groundwater reaching the surface in low spots," said Mikki Osterloo of the University of Hawaii. "The water would evaporate and leave mineral deposits, which build up over years. The sites are disconnected, so they are unlikely to be the remnants of a global ocean."
The deposits point to places where water once was abundant and where proof might exist of possible martian life from the Red Planet's past.
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