President Bush on Friday picked physicist Michael Griffin to lead NASA as it prepares to resume space shuttle flights and tries to meet the White House goal of sending astronauts back to the moon in the decade ahead. If confirmed by the Senate, Griffin would become the space agency's 11th administrator. Members of Congress immediately praised the president's choice, as did John Logsdon, director of George Washington University's space policy institute. "I've known Mike for a long time and have a great deal of respect for him as a kind of innovative thinker, real enthusiast full of energy," Logsdon said....