Flaw in NASA's Orbiter rule out some signs of water on Mars
 A flaw in NASA's Mars Reconnaissance Orbiter's data has ruled out some signs of water on Mars, according to a study. According to the researchers, the Orbiter's imaging spectrometer can be confused by some high-contrast areas, and produce false signs of perchlorates that hintn at salt water flows. "We have to be more cautious about detecting them," researchers added.