Multimedia Gallery
Displaying 351 - 360 of 534
Artifact
In the 1990s, the NIST-7 was the most accurate clock in the country and helped keep the GPS clocks synchronized.
Artifact
Nocturnal and Sundial, signed by Caspar Vopel, Cologne, 16th century
Artifact
The Astroinertial Navigation System provided rapid celestial navigation fixes for the SR-71.
Artifact
A rubidium clock like this was tested on the NTS-2 satellite to see if clocks could keep accurate time in space.
Photograph
The NTS-2 Development Team at the Naval Research Laboratory.
Illustration
This illustration shows the important components of the NTS-2 satellite.
Artifact
Octant marked: "Andrew Newell / Maker / Boston," about 1800
Illustration
Opportunity Rover on Mars
Document
Reporters expressed surprise at Lindbergh’s admission of a shortfall in his navigation skills.
Photograph
Distance flier and polar explorer
