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- Media Type: Photograph
Displaying 191 - 200 of 215
Photograph
Engineers testing a transmitter for the 621B system.
Photograph
The first picture of the Moon by a U.S. spacecraft, Ranger 7, in 1964.
Photograph
First Ranger 9 photograph of the Moon.
Photograph
Engineers checking the second Transit satellite.
Photograph
Wiley Post extensively modified the Winnie Mae for his 1931 around-the-world flight with Harold Gatty.
Photograph
Engineers working on the third prototype GPS satellite.
Photograph
Army Air Corps navigation engineer
Photograph
Army Air Corps navigation engineer
Photograph
The TIMATION 1 satellite, NRL’s first experiment in using time signals for navigation.
Photograph
Transit land navigation system installed in a vehicle.