Rovers Update: Spirit Hunkers Down, Opportunity on the Move

摘要

Those "never say 'die'" Mars Exploration Rovers - NASA's Spirit and Opportunity - continue to chalk up scientific discoveries on opposite sides of the red planet. Looming large on the horizon for the Opportunity rover at Meridiani Planum is Victoria Crater - a grand bit of territory that is roughly 800 meters in diameter. That is about six times wider than Endurance Crater, a feature Opportunity previously surveyed for several months in 2004, gathering data on rock layers there that were affected by water a long, long time ago.