Pretty thorough document for a basement hoax. I'm kidding :) I'd like to see us go back. It's time for a moon base.
They are planning to send two rovers and an inflatable capsule. The inflatable capsule will work as a scaffolding for the rovers to print on. Two rovers will gather moon regolith around the inflated structure to create a protective shell, and their planned lunar base will be able to house 4 people.
It's fascinating!
Source : http://www.esa.int/spaceinvideos/Videos/2014/11/3D-printing_...
That's why it took them 45 years to produce it ;-)
Buzz Aldrin will punch you in the nose. ;-)