Click to open image viewer. This artifact is one of several replicas and flight spare Explorer 1 spacecraft in the collection. It was identified as a fully instrumented flight spare of the Explorer-1 ...

Click to open image viewer. This is one of several replicas of the Explorer 1 in the collection consisting of machined metal shells of the payload section. Explorer-1 was the first American satellite ...

Add Yahoo as a preferred source to see more of our stories on Google. Explorer 1 became the first successfully launched satellite by the United States when it was sent to space on 31 January 1958. A ...

The launch of the Explorer 1 satellite, 50 years ago tomorrow, showed the unlimited potential of the United States to succeed on the highest of technological levels, AIA President and CEO Marion ...

A half-century ago, the Jet Propulsion Laboratory’s Explorer 1 spacecraft became America’s first Earth-orbiting satellite when it sailed into space on Jan. 31, 1958. In honor of the historic ...

REDSTONE ARSENAL, Alabama -- Since America's beginning, the U.S. Army led the nation in exploration of the continent, and this year it celebrates the 60th anniversary of leading the nation in the ...

Add Yahoo as a preferred source to see more of our stories on Google. On March 26, 1958, the United States launched its third satellite into space. ['On This Day in Space' Video Series on ...

Explorer 1 became the first successfully launched satellite by the United States when it was sent to space on 31 January 1958. A quick response to the Soviet Union’s launch of Sputnik 1, Explorer 1’s ...