The Second Transit Satellite Under Inspection

Engineers checking the second Transit satellite before launch on April 13, 1960. Transit satellites brought about the first working system of satellite navigation.  

Caption:
Engineers checking the second Transit satellite.
Type: Photograph
Image Date: April 13, 1960
Credit: Johns Hopkins University Applied Physics Laboratory
PL-60 52899
Innovations
Navigation Methods
 
Engineers checking the second Transit satellite.