Word: planitia
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...Viking Project Manager James S. Martin Jr. sounded plaintive last week, there was good reason. After studying photographs and radar scans of Viking's first alternative landing site on Mars' Chryse Planitia, the Plains of Chryse, he scrubbed a landing scheduled for July 17 and started studying a new site for a touchdown that could not take place until next week at the earliest. The postponement, following last month's decision to cancel Viking's scheduled July 4 landing, raised concern among scientists at the Jet Propulsion Laboratory's Mission Control Center; it further reduced...