Jun 22 1960
From The Space Library
Navy TRANSIT II-A, an experimental navigation satellite with two payloads (navigation and radiation measurement), successfully launched into orbit by Thor-Able-Star vehicle. This was the first time that two instrumented satellites have been placed into orbit at the same time.
H. Rept. 1931, Committee on Science and Astronautics, Army Lunar Construction And Mapping Program - House of Representatives Report published.
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