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ESA 3D prints extraterrestrial bricks with concentrated sunlight and moondust #space #3Dprinting

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Via inhabitat

Future travelers to both the Moon and Mars could use locally-sourced materials to build habitats. Recently University of California, San Diego engineers funded by NASA were able to create super-strong bricks with simulated Mars dirt, and now ESA scientists have been able to use dust with similar composition and grain size as the material on the moon to 3D print bricks.

Materials engineer Advenit Makaya said they cooked successive layers of moondust 0.1 millimeters thick in a solar furnace at temperatures of 1,000 degrees Celsius – or 1,832 degrees Fahrenheit. The team can finish a 7.9 by 3.9 by 1.1 inch brick in about five hours. The solar furnace is located at the DLR German Aerospace Center, a place you may be familiar with because they recently built the world’s largest artificial sun.

The bricks will now go through extensive mechanical testing. They’re not perfect yet; for example, some have warped at their edges because the center cools slower than the edges. Advenit said they’re looking into ways to manage the warping, “but for now this project is a proof of concept, showing that such a lunar construction method is indeed feasible.”

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