research satellite

109 satellites and probes

Spacecraft	Launch	Operator	Launch vehicle
Geophysical Research Satellite	June 28, 1963	—	Scout X-4
LOFTI 2A	June 15, 1963	—	Thor-Agena D
ERS 6	May 9, 1963	—	Atlas-Agena B
P35-3	February 19, 1963	—	Scout X-3
ERS 3	December 17, 1962	—	Atlas-Agena B
P35-2	August 23, 1962	—	Scout X-2M
Explorer 13	August 25, 1961	—	Scout X-1
LOFTI-1	February 22, 1961	—	Thor-Ablestar
Explorer S-46	March 23, 1960	National Aeronautics and Space Administration	Juno II
Luna 2	September 12, 1959	S.P. Korolev Rocket and Space Corporation Energia	Luna 8K72
Explorer 4	July 26, 1958	—	Juno I
Sputnik 3	April 27, 1958	—	Sputnik
Explorer 3	March 26, 1958	Army Ballistic Missile Agency, Jet Propulsion Laboratory	Juno I