WASHINGTON, Sept. 10 (UPI) -- The next soil sample the U.S. space agency's Phoenix Mars Lander obtains will go to the fourth of its four wet chemistry laboratory cells.
The National Aeronautics and Space Administration said the source for that sample will be the "Snow White" trench on the eastern end of the area reachable with Phoenix's robotic arm. In July that trench yielded a sample that was found to contain water ice.