NASA / JPL-CALTECH / U.ARIZONA / SCIENCE PHOTO LIBRARY NASA / JPL-CALTECH / U.ARIZONA / SCIENCE PHOTO LIBRARY
Haematite on Mars. Satellite image showing the haematite bearing plains of the northern Meridiani Planum on Mars. On Earth, haematite is often formed in hot springs or in standing pools of water, therefore, many scientists believe that the haematite at Meridiani Planum may be indicative of ancient hot springs or that the environment contained liquid water. Imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
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