April 13 – Discoverer 2

It's All Going On Up There

Discoverer 2 was launched on April 13th, 1959 from Vandenberg Air Force Base into a 239 x 346 km polar orbit via a Thor-Agena booster. It was a large cylindrical satellite, 1.5 metres in diameter, 5.85 metres long, and a hefty 3800 kg, designed to gather data for use in future missions, and to attempt ejection of an instrument package from orbit for recovery back down here.  This part of the plan was attempted on 14 April 1959, when a reentry vehicle was ejected, with the idea that it would come down somewhere conveniently near Hawaii for recovery.  Unfortunately, due to a malfunction, reentry was over the north polar region, and the capsule remains officially unrecovered, although there are those who say Soviet agents got to it first.  It has been suggested that this episode was partly the inspiration for Alistair MacLean’s novel, Ice Station Zebra.

Discoverer 2 Recovery vehicle being attached to the Thor-Agena launcher (image credit: USAF). Discoverer 2 Recovery vehicle being attached…

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