MajorLunaC - 2014-07-26

NASA has some 3D-printable models that can also be used for this project, at least as add-ons, since I'm not sure of the licenses (not all their models are 3D-printable). They're actually 2 or more years old, but it's hard to determine if they're the same as the ones currently being used. There may also be textures included, according to the screenshots provided.

Source: http://nasa3d.arc.nasa.gov/models/