NASA chief Sean O'Keefe tells Congress that while the shuttle fleet is grounded, the agency plans to keep the International Space Station running with the help of Russian spacecraft. NPR's Joe Palca reports.
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Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.
