President George W. Bush is expected to unveil the details of his proposal to send manned missions to the Moon and to Mars. Already, the plan is creating debate over how much it might cost. Join Talk of the Nation for live coverage of the president's announcement from NASA headquarters in Washington, DC and a discussion about the future of U.S. ambitions in space.
*NPR science correspondent
Sen. Sam Brownback
*Republican senator from Kansas
*Sits on the Senate Commerce, Science and Transportation Committee
Rep. Barney Frank
*Democratic congressman from Massachusetts
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