His team used the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) and other instruments on board NASA's Mars Reconnaissance Orbiter to look at colors in reflected sunlight.

他的团队使用火星侦察影像频谱仪和其他工具登陆火星侦查轨道，观察火星上因太阳反射而产生的颜色。

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Spectroscopic images of those rocks taken with the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) showed that they were composed of minerals that only form in the presence of water.

FORBES: NASA Finds Remains Of Ancient Martian Lake