The Defense Advanced Research Projects Agency has set its sights on the Moon, recently choosing defense giant Northrop Grumman to work on concepts for building a lunar railroad network, according to the Debrief. The recent development is DARPA's latest announcement concerning their 10-year Lunar Architecture (LunA-10) Capability Study. The ultimate goal is to reportedly establish a human colony on the Moon and a "thriving lunar economy." DARPA published the following statement about the development: The 10-Year Lunar Architecture (LunA-10) will explore the rapid development of foundational technology concepts designed to move away from individual scientific efforts within isolated, self-sufficient systems...