On the evening of Jan. 31, 1958, the United States orbited its first satellite -- Explorer 1. The effort was part of the nation's participation in the International Geophysical Year (IGY), a peaceful ...
Click to open image viewer. This is one of several examples of the Explorer 1 payload section in the collection, consisting of machined and painted metal shells with no instrumentation. This outer ...
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 ...
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