Discoverer 1 was the first of a series of satellites which were part of the Corona reconnaissance satellite program. It was launched on a Thor-Agena rocket on February 28, 1959 at 1:49 PST from Vandenberg Air Force Base in California. It was a prototype of the KH-1 satellite, but did not contain either a camera or a film capsule. It was the first satellite launched toward the South Pole in an attempt to achieve polar orbit, but was unsuccessful. A CIA report, later declassified, concluded that "Today, most people believe the DISCOVERER I landed somewhere near the South Pole."
- ↑ Clayton K. S. Chun, Thunder Over the Horizon: From V-2 Rockets to Ballistic Missiles (Greenwood Publishing Group, 2006), pp74-75
- ↑ David L. Hancock (1995). "Corona: America's First Satellite Program". In Kevin C. Ruffner. CIA Center for the Study of Intelligence. https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/corona.pdf.
- Day, Dwayne A. (13 April 2009). "Lost over the horizon: Discoverer 1 explores Antarctica". The Space Review. http://www.thespacereview.com/article/1347/1.
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