Project Icarus: Laying the Plans for Interstellar Travel

We humans have known for a very long time that going to the stars will be difficult, if not impossible. The motto of NASA, Per Aspera Ad Astra, a latin phrase meaning "through hardship to the stars," comes down to us all the way from Seneca the Younger, a contemporary of Nero. Even today, when our metaphors of exertion and ambition are many --"swing for the fences," "go for gold" -- when we strain to capture the difficulty of a task, or the enormity of an achievement, "reach for the stars" is the first and most natural phrase that comes to mind. Our hierarchy of the ultimate human accomplishments is in this sense remarkably stable at the top.

And with good reason, because interstellar travel is in fact very difficult. With today's best propulsion technology, chemical rockets, it would take between 50 and a 100 millennia to reach Proxima Centauri, the nearest star to the Sun. The ideas we have about how to expedite such a journey are just that: ideas. They belong to the realm of speculation. Nonetheless, they are beginning to take on an empirical glow. To be sure, the bundle of technologies that could conceivably send a spacecraft to another star won't be here within the decade, or even within several, but neither are those technologies mere magical realism -- indeed, planning for their development has begun in earnest.

In September of last year DARPA, the Defense Advanced Research Projects Agency, convened a conference in Orlando, Florida, to discuss and promote one of its newest and most intriguing research projects: The 100 Year Starship Study. According to DARPA, the study is intended to "develop and mature a technology portfolio that will enable long-distance manned space flight a century from now." To that end, DARPA is now negotiating a grant of $500,000 to ex-astronaut Dorothy Jemison, whose personal foundation will team up with Project Icarus, a division of Icarus Interstellar, to seed the plans for an interstellar mission that could span several centuries.

Project Icarus, which will focus on the mission's technological challenges, is a theoretical engineering study that was launched in 2009 by the British Interplanetary Society with the purpose of designing an interstellar spacecraft. It brings together an international group of volunteer aerospace engineers from government space agencies, universities and the private sector with the purpose of generating technical reports on the engineering layout, functionality, physics, operation, and mission profile of an interstellar probe. You can think of it as a kind of repository for bleeding-edge thinking about interstellar travel.

Project Icarus takes its inspiration from Project Daedalus, a five-year study launched by the British Interplanetary Society in 1973 to determine whether interstellar travel was feasible at all. Project Daedalus ultimately concluded that interstellar was possible, but acknowledged that the technical challenges were significant. Icarus aims to pick up where Daedalus left off, by trying to chip away at some of those technical challenges. Andreas Tziolas, a former research fellow at NASA who holds a Ph.D. in Gravitation and Cosmology, is the Project Leader for Project Icarus. Yesterday I spoke to Tziolas about how and, more interestingly, why we might someday send a mission to the stars


The interview:http://www.theatlantic.com/technology/archive/2012/02/project-icarus-laying-the-plans-for-interstellar-travel/253335/#.T0aONSYAZFA.reddit