A technician prepares Sputnik.
In 1957, a little beeping ball stunned the world. Sputnik I, launched 50 years ago on October 4, set the stage for many more satellites to follow and marked the dawn of the space age. Guests and callers discuss Sputnik and its effects on science, education, and the way we view the world.
Jay Barbree, space correspondent, NBC News; author, Live from Cape Canaveral: Covering the Space Race, from Sputnik to Today
Michael D'Antonio, journalist and author of A Ball, A Dog, And A Monkey: 1957 - The Space Race Begins
Leon Lederman, Nobel Laureate in physics, 1988; director emeritus, Fermi National Accelerator Laboratory; professor of physics at Illinois Institute of Technology
Konrad Dannenberg, former deputy manager, Saturn Program; former deputy director, Program Development Mission and Payload Planning, NASA's Marshall Space Flight Center; consultant, Alabama Space and Rocket Center