JPL
As the Director of JPL, from 1954, Pickering was closely involved with management of the Private and Corporal missiles under the aegis of the U.S. Army.
His group launched Explorer I on a Jupiter-C rocket from Cape Canaveral on 31 January 1958 less than four months after the Russians had launched Sputnik (much to the surprise of the Americans).
In 1958 the lab's projects were transferred to the National Aeronautics and Space Administration (NASA) and Pickering's team concentrated on NASA's unmanned space-flight program. JPL, under Pickering's direction flew further Explorer 3 and Pioneer missions as well as the Ranger and Surveyor missions to the moon and the several Mariner flybys of Venus and Mars.
Explorer III discovered the radiation field round the earth that is now known as the Van Allen radiation belt. Explorer 1 orbited for 10 years and was the forerunner of a number of successful JPL earth and deep-space satellites. William Hayward Pickering is not to be confused with William Henry Pickering, an astronomer from an earlier era.
At the time of his retirement as director, in 1976, the Voyager missions were about to launch on tours of the outer planets and Viking 1 was on its way to land on Mars.
Pickering's main attributes, beyond his scholarly achievements, were his team organisational and project management skills.
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