The scientific objectives were : Besides the experiments with the scientific instruments , the objectives of both the Mariner 1 and 2 probes included also engineering objectives : Mariner 2 was launched from Cape Canaveral Air Force Station Launch Complex 12 at 06:53:14 UTC on August 27 , 1962 by a two-stage Atlas-Agena rocket .
Mariner 2 was launched on August 27 , 1962 aboard an Atlas-Agena B rocket at Cape Canaveral Air Force Station .