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Will U.S. be left behind after ending shuttle program?

John Zarrella, reporter for CNN

Tags: john zarrella, CNN, nasa, space shuttle program

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Chief: NASA relevant for 50 more years; Kelly won't run

NASA will see at least 50 more years of dominating the space arena, the agency's head stated Friday, despite calls that next week's final space shuttle launch signals the end of its dominance in that arena.

Tags: mark kelly, gabrielle giffords, nasa

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