You could easily spend 5 minutes inviting the JPL Creative team via email to NeonMob and see what happens?
Here's the info about the Creative Team that made the posters.. along with the names of all the illustrators and more:
OR, I could easily spend 5 minutes inviting them via email?
Here's where you email the JPL team: http://www.jpl.nasa.gov/contact_JPL.php
... how about WE (as in however many of us want to see the beauts on NeonMob) email JPL and extend the NeonMob invitation? Yea.. I calculate this as the greatest chance of success..
If you're really eager you could invite them via Facebook: https://www.facebook.com/NASAJPL/
or ... hmm you can even call them directly!!!>> (818) 354-4321