We all knew that 3D printing was important to NASA, however the technology will end up being one of the keys to any successful Mars Mission. NASA's Chief, Charles Bolden gave a speech the other day outlining a 3 step plan to get to the red planet. Additive manufacturing on board spacecraft was a very important part. 3D Printing will allow astronauts to have available a variety of good without having to weigh down the spacecraft by supplying an inventory.

http://3dprint.com/2577/nasa-manned-...s-3d-printing/

What do you think about the prospect of a manned mission in Mars in the next 15-20 years?