the overall program also included a 3D terrain browser built on top of .geo that pre-dated Google Earth by 4 or 5 years.

http://www.ai.sri.com/digital-earth/

those were great times... sadly, the Principal Investigator passed away, one of the lead devs left the company for greener (for-profit) pastures, and the program was de-funded when DARPA priorities shifted post-9/11 and it all just kinda evaporated.

re: the moon - I honestly forget how that part was supposed to work....