Shuttle Legacy: Grand, Though Not What Was Planned

When the space shuttle program began more than 30 years ago, it was billed as "our biggest bargain in out-of-this-world research." Flights never became as routine or cheap as NASA had initially envisioned. Still, many say the shuttle fulfilled its promise of being a reusable spacecraft.

Cristina Dumitru Daisy Fuentes Dania Ramirez