alternatehistory.com

Pioneer P-1 was set to launch late September 1959, but before it could the rocket launcher without the payload exploded on pad during pre-flight tests.

http://space.skyrocket.de/doc_sdat/pioneer_p1.htm

Suppose in another TL where the failure never happened and P-1 was launched mere days before Luna 3 and photographs the first images of lunar back side, what would be the ramfications then?
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