The Road to Mars...

摘要

In NASA's dusty archives sit the rem-nants of a hidden space age, one whose ambition far exceeded that of the Apollo moon program. In the 1960s, NASA was eager to broaden its successes, and it began preparing— on paper, at least—for what it felt certain would be its next big step: a mission to Mars. To us, these plans, filed and half-forgotten, seem audacious enough to be the work of science fiction writers, yet the men who conceived them were conservative engineers.