Researchers from Los Alamos National Laboratory and the French Space Agency have tracked a trail of minerals that point to the prior presence of water at the Curiosity rover site on Mars.
Researchers from the Mars Science Laboratory’s ChemCam  team today described how the laser instrument aboard the Curiosity rover—an SUV-sized vehicle studying the surface of the Red Planet—has detected veins of gypsum running through an area known as Yellowknife Bay, located some 700 meters away from where the rover landed five months ago.
Gypsum and some related minerals can be formed when water reacts with other rocks and minerals. The presence of gypsum and its cousin, bassinite, along with physical evidence of alluvial flow patterns previously seen during the Mars Science Laboratory mission, could indicate that the Yellowknife Bay area once was home to ponds created by runoff or subsurface water that had percolated to the surface.
Read about the Yellowknife Road .
About the photo:
The Mars Science Laboratory's Curiosity Rover recently took this photo of the Martian landscape looking toward Mount Sharp while on its way toward Yellowknife Bay—an area where researchers have found minerals indicating the past presence of water. (NASA Photo)