About
This image is a cutaway illustration of the Explorer I satellite with callouts. The Explorer I satellite was America's first scientific satellite launched aboard the Jupiter C launch vehicle on January 31, 1958. The Explorer I carried the radiation detection experiment designed by Dr. James Van Allen and discovered the Van Allen Radiation Belt. — NASA MSFC · 1959. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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