Although freezing temperatures have led to a loss of contact with the Mars Pathfinder, data collected by the mission is invaluable in improving our understanding of the red planet. Meanwhile, another US probe to Mars will bring back more data than all th
An analysis of data from the Halogen Occultation Experiment (HALOE) on the Upper Atmosphere Research Satellite indicates that there is a wet layer about 70 to 80 km up. It is generally believed that
