Evidence of deep groundwater on Mars detailed in new study
March 28 (UPI) -- Mars may still host active groundwater deep beneath its surface, according to a new study by researchers at the University of Southern California. After closely analyzing a phenomenon known as "recurrent slope linea," estimated to be the dry signatures left by short-lived streams, scientists determined deep groundwater on Mars is likely not relegated to the poles. Researchers have previously argued surface water activity accounts for the recurrent slope linea found on the walls of Martian craters. "We suggest that this may not be true," Essam Heggy, a scientist working on ESA's Mars Express Sounding radar experiment, called MARSIS, said in a news release. "We propose an alternative hypothesis that they originate from a deep pressurized groundwater source which comes to ...
