Word: schweickart
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Dates: during 2005-2005
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...letter sent last month to NASA Administrator Michael Griffin, former astronaut Rusty Schweickart, B612's chairman, called attention to the Apophis dilemma. He urged that a radio transponder, similar to those on commercial airliners, be landed on the asteroid so that astronomers might track its orbit precisely to determine if it will pass through a keyhole, and he requested that NASA quickly estimate the time required for both landing the transponder and a subsequent deflection mission that could alter the asteroid's orbit...