Augmented reality may have had a very short period of hype on mobile devices, but may get a new lease on life with Microsoft's HoloLens. AR might be fun for games but Microsoft , one of AR's current biggest advocates, is trying to show how the technology can be harnessed for more than just entertainment. Like education and research, for example. That might be the key motivation behind Galaxy Explorer, one of the AR projects being developed by Microsoft's HoloLens team. And now that team is giving a few peeks at the prototype.