Spacewalking astronauts finish months of robot arm repairCAPE CANAVERAL, Fla. (AP) — Spacewalking astronauts wrapped up months of repair work Friday on the International Space Station 's big robot arm….http://hosted.ap.org/lineups/SCIENCEHEADS-rss_2.0.xml?SITE=OHLIM&SECTION=HOMEAP Top Science News at 7:56 p.m. ESTAP Top Science News at 7:56 p.m. ESTTechnology124By MARCIA DUNN
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