The first 100 years of powered flight have taught us how much American ingenuity can accomplish. By continuing to make use of the unique capabilities of the space shuttle in the context of a balanced and forward-looking space program, we refuse to abandon the promise of exploration and innovation in the next century of flight.

In today's Los Angeles Times, NASA Administrator Sean O'Keefe argues for a renewed manned space program.

Across Sands of Time and Oceans of Space