Explorer 1 was less than 2 meters long and weighed about 13.4 kg. The model William Hayward Pickering, James Van Allen, and Wernher von Braun are brandishing triumphantly in this photo is the ...

The United States became a spacefaring nation 60 years ago today. On Jan. 31, 1958, the nation launched its first successful satellite — Explorer 1, which rode to Earth orbit atop a Jupiter-C rocket ...

On March 26, 1958, the United States launched its third satellite into space. Explorer 3 was almost identical to Explorer 1, which was the first satellite the U.S. ever launched. Explorer 3 launched ...

George Ludwig, a graduate student who worked with physicist James Van Allen at the University of Iowa, is seen here testing the Explorer 1 instruments as the satellite was prepared for launch. When ...

The United States Army launched Explorer 3, its second successful satellite launch in the Explorer program, on March 26, 1958. Explorer 1’s major accomplishment was the discovery of the Van Allen ...

ESA’s Earth Observation Programme Board has selected ‘Biomass’ to become the seventh Earth Explorer mission. The innovative satellite aims to map and monitor one of Earth’s most precious resources.

Explorer 1 was the first successful satellite launched by the United States. It was designed and built by the Jet Propulsion Laboratory (JPL) under the direction of Dr. William Pickering. They ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This artifact is one of several ...