About the Author Slides from the Lecture Presidential Lecture 1992 - James A. Van Allen

Figure 3. William H. Pickering, James A. Van Allen, and Wernher von Braun (left to right) hold aloft a full scale model of the Explorer I satellite at a press conference in the Great Hall of the National Academy of Sciences in the early hours of 1 February 1958, following confirma­tion that Explorer I had completed its first orbit of the Earth.


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