| | Chronology of Spy Satellites (Site not responding. Last check: 2007-10-07) |
 | | The project, now carrying the name "Corona," undergoes what the Central Intelligence Agency calls "covert reactivation"Ñ only a small number of govern ment officials, Lockheed em ployees and employees at oth er defense contracting compa nies are briefed on the new ef fort. |
 | | Jan. 21, 1959: The first attempt to launch a rocket designed to carry the Corona satellite, as sembled at the Hiller Aircraft plant in Menlo Park, ends in failure 60 minutes before blast off at Vandenberg Air Force Base near Santa Barbara when explosive bolts are triggered accidentally, damaging the rocket. |
 | | During the life of the pro gram, Corona mapped 750 mil lion sguare miles of the Earth's surface, mostly ih the Soviet Union and China; the resolution of its cameras improved from initially distinguishing objects on the ground no smaller than 20 feet to picking out objects just five feet across. |
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