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It's the 50th anniversary of the National Aeronautics and Space Administration, better known as NASA, and Google's rolled out a commemorative logo. The graphic features the Voyager spacecraft, Mars and moon landing vehicles and the Mercury rocket. Not featured? Any of the aircraft in Larry and Sergey's party-plane fleet, which are parked at NASA's Moffett Field and allowed to take off and land from the publicly owned facility increasingly known for private privilege.