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Continue to ChatWe have concluded that the rocks here were once soaked in liquid water. It changed their texture, and it changed their chemistry. We've been able to read the tell-tale clues the water left behind, giving us confidence in that conclusion. - Steve Squyres from https://whatsmyquote.com/quote/we-have-concluded-that-the-rocks-here-were-once-soaked-in-liquid-water-it-changed-their-texture-and-it-changed