Astronaut Michael Massimino, floating inside the Hubble Space Telescope, and fellow spacewalker Michael "Bueno" Good, on the end of the shuttle Atlantis' robot arm, successfully installed four state-of-the-art gyroscopes Friday. But an alignment problem prevented the astronauts from installing a box containing two final gyros. Even so, Hubble Program Manager Preston Burch said the refurbished two-gyro rate sensor unit, or RSU, that they installed instead featured two of the three improvements. (source: news.cnet.com)
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