This effort prepared ground work for the political decision to go ahead with the launch of Sputnik.
Eisenhower was even pleased that the USSR, not the U.
27 April 2017.
8 August 2016.
It is on display at the.
Two American physicists, William Guier and George Weiffenbach, at Johns Hopkins University's APL decided to monitor Sputnik's radio transmissions and within hours realized that, because of the , they could pinpoint where the satellite was along its orbit.