The First 3D Printer to Use Molten Metal in Space Is Headed to the ISS This Week
The Apollo 13 moon mission didn’t go as planned. After an explosion blew off part of the spacecraft, the astronauts spent a harrowing few days trying to get home. At one point, to keep the air breathable, the crew had to cobble together a converter for ill-fitting CO2 scrubbers with duct tape,
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