You must have seen those fancy printers in sci-fi movies which are capable of printing 3D object by scanning them. Well, its not science fiction anymore. Scientists at the Z Corporation in Burlington, Massachusetts, USA have developed 3D printers that can replicate 3D objects just like we see in the sci-fi movies. This kind of thing has immense usefulness in space where you can print tools or damaged components instead of waiting to get them from the Earth, if you have their 3D blueprints in the system.
Here is a video of their printer in action:
