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The trouble is that while common, we still had to explore our whole planet pretty thoroughly to find them. We just don't enough machines exploring Mars to do i

• ceejayoz 3y ago
  That's fair. I'd expect knowing where we're likely to find them on Earth does at least help inform our few Mars landers' choice of landing sites, though.
• chatmasta 3y ago
  Would orbiting satellites with lidar sensors be able to find suitable candidate sites for digging?