“The Defense Advanced Research Projects Agency (DARPA) has initiated a study to inspire the first steps in the next era of space exploration—a journey between the stars.” So reads the Request for Information document (RFI) that DARPA released recently, seeking ideas for organization, business model and approach for a self-sustaining investment vehicle to study these matters. Note that word ‘study,’ because what DARPA talks about in its recent RFI is this: “The 100 Year StarshipTM Study is a project seeded by DARPA to develop a viable and sustainable model for persistent, long-term, private-sector investment into the myriad of disciplines needed to make long-distance space travel practicable and feasible.”

We’ve talked about the 100 Year Starship study before, particularly in Marc Millis’ article on his participation at the first meeting held to discuss the idea. Now Millis, former head of NASA’s Breakthrough Propulsion Physics project and founding architect of the Tau Zero Foundation, is releasing his response to the RFI. In coming days, we’ll look at responses from the Project Icarus team as well, in an attempt to fill you in on where things stand. Look for the Call for Papers for an upcoming conference on the 100 Year Starship study as part of this coverage.

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