USA launches in 1973
March 1973
April 1973
6 Apr
Pioneer 11
Atlas20 Apr
Anik-A2
Delta
May 1973
June 1973
10 Jun
Explorer 49
Delta12 Jun
OPS-6157
Titan26 Jun
OPS-4018
Titan
July 1973
August 1973
17 Aug
DMSP-5B-F4
Thor21 Aug
OPS-7724
Titan23 Aug
Intelsat 4 F7
Atlas29 Aug
REV test
Atlas
September 1973
October 1973
6 Oct
SSTTP M2-27
Titan26 Oct
Explorer 50
Delta30 Oct
Transit-O 20
Scout
November 1973
3 Nov
Mariner 10
Atlas6 Nov
NOAA-3
Delta10 Nov
OPS-6630
Titan16 Nov
Skylab 4
Saturn I
December 1973
13 Dec
OPS-9433
Titan16 Dec
Explorer 51
Delta