When NASA's space shuttle program was announced back in 1972, it was billed as a major advance — a key step in humanity's quest to exploit and explore space.
The shuttle would enable safe, frequent and affordable access to space, the argument went, with flights occurring as often as once per week and costing as little as $20 million each. But much of that original vision didn't come to pass.
Two of the program's 134 flights have ended in tragedy, killing 14 astronauts in all. Recent NASA estimates peg the shuttle program's cost through the end of last year at $209 billion (in 2010 dollars), yielding a per-flight cost of nearly $1.6 billion. And the orbiter fleet never flew more than nine missions in a single year.
Read Full Article »