Sputnik 4, launched May 15, 1960 from the Soviet Union, was the first Vostok spacecraft. It was unmanned, but served as a test for the first human spaceflight. A guidance error sent it into a higher orbit than intended. The descent module ree-entered the atmosphere on September 6, 1962. A piece weighing 20 pounds was found in Manitowoc, Wisconsin by two police officers.
The remaining module re-entered the atmosphere on October 15, 1965.
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