The first two decades of human spaceflight were a spectacular success. But it has been downhill since then, writes historian Jonathan Coopersmith. As we mark the fiftieth anniversary of the first manned spaceflight, we need a revival of serious government support for the space program.
Jonathan Coopersmith: The Obama administration is discarding older NASA technologies in a quest for a new start. A historian of technology says that progress depends on finding ways to explore space at tolerable prices