Some of those failures happened during the faster, better, cheaper era at NASA, in which taking on more risk was not a deal-breaker. The pendulum has swung bac

Some of those failures happened during the faster, better, cheaper era at NASA, in which taking on more risk was not a deal-breaker. The pendulum has swung back. For more context, see: http://www.thespacereview.com/article/35/1 http://www.thespacereview.com/article/35/1