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Building a Mining Base on the Moon

A base on the Moon will more useful to supply construction materials to building projects in space that it will be for any other purpose. Supply of raw materials for building in space will need to come from locations that are not deep inside a gravity well. That means from asteroids or from moons will […]

-5,000 – wheel and axle

Prior to the wheel, heavy loads could be moved by dragging sleds and the sleds could be moved with more ease if rollers were placed beneath the sleds. At some point the rollers evolved into wheels that were attached to axles which were fixed to the wheels and turned with them. Eventually, the fixed wheel […]