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SpaceX Mars and Moon Colonization with titanium alloy bulldozers and materials processing
Make a moon and Mars capable bulldozer. Replace steel with titanium-aluminum alloy. Use electric battery technology and solar panels.
Astrobotic developed Polaris as an excavation vehicle that could serve as a robotic precursor to future human planetary colonization efforts by preparing terrain and mining ice and other volatiles.
Astrobotic is developing robotic bulldozers the size of riding mowers for the moon. They could prepare a safe landing site for NASA's lunar outpost by surrounding it with an eight-foot high semi-circle berm to block grit kicked out by spacecraft landings from hitting nearby habitats.