and World Science staff
Sept. 29, 2008
NASA’s Phoenix Mars Lander has detected snow falling from Martian clouds, scientists say, and spacecraft soil tests have given evidence of past interaction between minerals and liquid water, processes seen on Earth.
A laser instrument designed to gather knowledge of how the atmosphere and surface interact on Mars has detected snow from clouds about 4 kilometers (2.5 miles) above the spacecraft’s landing site, the researchers reported. Data show the snow vaporizing before reaching the ground.