Daily Star's biggest headlines straight to your inbox!Rock samples collected from Mars have discovered that water was once present on the planet, revealing alien life could have existed.The Perseverance rover discovered the rocks, which NASA scientists believe provides significant evidence of a water source for a long period of time.Scientists noticed salts spotted within the rocks and this is most likely due to groundwater flowered through the rocks or when the liquid evaporated.“It looks like our first rocks reveal a potentially habitable sustained environment,” said Ken Farley of Caltech, project scientist for the mission, which is led by NASA’s Jet Propulsion Laboratory (JPL) in Southern California.“It’s a big deal that the water was.
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