Payoffs (Benefits from Space Exploration:  4 Dec 57, ... 16 Jan 62, 16 Apr 62, 10 May 62, 10 May 62, 8 Nov 62, 15 Nov 62, 18 Dec 62,10 Jan 63, 12 Jan 63, 6 Feb 63,

Pegasus (satellite): 29 Dec 62, 5 Feb 63,

Photographs from space (not as good as human eyes): 28 Jul 63,

Pickering, William H. (scientists): 15 Nov 57, 12 Dec 57,

Pioneer (programs): 10 Jan 63,
Early Moon probes:2 Mar 57, 12 Oct 57,
Pioneer 0 (17 Aug 58): ,
Pioneer 1 (11 Oct 58): ,
Pioneer 2 (8 Nov 58): ,
Pioneer 3 (6 Dec 58): ,
Pioneer 4 (3 Mar 59): ,
Pioneer P-3 (26 Nov 59): ,
Pioneer 5 (11 Mar 60): , 10 Mar 62,
Pioneer P-30 (25 Sep 60): ,
Pioneer P-31 (15 Dec 60): ,
Pioneer 6-9 / IMP: 10 Jan 63, 15 Apr 63, 10 Jun 63,
Pioneer 6 (16 Dec 65): ,
Pioneer 7 (17 Aug 66): ,
Pioneer 8 (13 Dec 67): ,
Pioneer 9 (8 Nov 68): ,
Pioneer-Jupiter-Saturn: 12 Feb 63,
Pioneer 10 (3 Mar 72): ,
Pioneer 11 (6 Apr 73): ,
Pioneer-Venus (prgram): ,
Pioneer Venus 1 (20 May 78):
Pioneer Venus 2 (8 Aug 78):

Plesetsk Cosmodrome: 11 Jan 57,

POGO (satellite: 30 Oct 62,

Pollution of Space: 21 Jan 63,

Powers, John A. “Shyrty” (NASA PAO): 31 Jul 63, 17 Aug 63,

Propulsion in space (chemical, nuclear, electrical): see Rocket.

PS-1 : see Sputnik 1
 

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. © Claude Lafleur, 2008