The Times. Mr Cowley said it was "no longer a question of if this will happen" but when.He said: "It has to happen because if we're really serious about the exploration of the moon, or Mars, or anywhere beyond that, this is technology we need to master very soon."He plans to use regolith, lunar soil as thin as icing sugar, to build protective bricks used in one metre thick walls protecting the astronauts' living quarters.The top layer of regolith, which consists of tiny jagged particles like glass, would be collected by robots.Then 3D printers would turn it into bricks which would be left to bake in the sun.NASA wants to send a man and woman to the Moon by 2024, with Mars the next destination by the 2030s.Earlier this week, it released the.
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