“Still, I can only guess what is going on with them now. And I suspect that for years after they emerge, smiling and waving, we will all still be guessing. In their sealed lair, astronauts aboard Mars500 will have journeyed to a remote and unique psychological place–to a new planet that we won’t ever wholly understand, even after the data is crunched. They went on a mission and they came home, as travelers always do, changed in ways that they will forever protect as secret, and also in ways they may never quite fathom themselves.”
–Bill Donahue. “Are We There Yet?” Wired 19.11 (Nov. 2011): 180-185, 212-213. Quote on page 213.