RT @NASAhistory: #OTD in 1960, Pioneer 5 launched.
Investigated interplanetary space between the orbits of Earth and Venus. https://t.co/CU3V0Ml8ck
RT @NASAhistory: #OTD in 1960, Pioneer 5 launched.
Investigated interplanetary space between the orbits of Earth and Venus. https://t.co/CU3V0Ml8ck