This is a 'fan made' model I did of the Lunar Atmosphere and Dust Environment Explorer aka LADEE satellite, launched 6-Sep-2013. I made 64 of these and gave one to everybody who attended the NASA Social event for the launch. This is in 3 pieces - the main body, the engines, and the 'side stuff' (the mass spectrometer and the Lunar Laser Communications Demonstration or LLCD) I uploaded the individual pieces files as well as the 'combined' files which is what you need to export from 123D Design. The 'combined' STL files can be used for printing. I sliced this at 0.2mm and printed in ABS on a Thing-O-Matic. Youtube video on using 123D Design and making the satellites: http://youtu.be/nmlvz6bIdFM