Apr 13 1959

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DISCOVERER II satellite successfully placed into polar orbit by Thor-Agena A booster, but capsule ejection malfunctioned causing it to impact in vicinity of Spitsbergen on April 14 instead of vicinity of Hawaii. It was first vehicle known to have been placed in a polar orbit and was the first attempt to recover an object from orbit.

VANGUARD (SLV-5) failed to achieve payload orbit because of loss of second-stage pitch attitude control.

Missiles & Rockets Apr 13 1959