NASA announced that it would be taking a 3D printer to space in 2014, and now here's how that's going to work. The video below shows off how astronauts will be able to print objects as they orbit Earth. So Star Trek you say.

But while it's not printing stuff like pizza just yet, this would enable astronauts to manufacture equipment and spare parts on demand. NASA will be able to provide digital blueprints or upload them from the ground. Check it out in the video below: