On this day in 1958, Explorer 1 became the United States’ first
satellite in space. The launch of the satellite — twice the size
of a basketball — was an important moment for the country,
as the Space Race with the Soviet Union was just beginning.
The three men responsible for the success of Explorer 1, at left is Dr. William H. Pickering, former director of JPL, which built and operated
the satellite. Dr. James A. van Allen, center, of the State University of Iowa, designed and built the instrument on Explorer that discovered
the radiation belts which circle the Earth. At right is Dr. Wernher von Braun, leader of the Army’s Redstone Arsenal team which built the
first stage Redstone rocket that launched Explorer 1.
On this day in 1945, Private Eddie Donald Slovik became the only
U.S. soldier since the American Civil War to be executed for
desertion.