National Aeronautics and Space Administration
"Read You Loud And Clear!": The Story of NASA's Spaceflight Tracking and Data Network (The NASA History Series)
At the height of the space race, 6,000 men and women operated NASA’s Spaceflight Tracking and Data Network at some two dozen locations across five continents. This network, known as the STDN, began its operation by tracking Sputnik 1, the world’s first artificial satellite that was launched into...
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