Mariner - friznit/Unofficial-BDB-Wiki GitHub Wiki

The Mariner (BDB Argo) series were derived from the Ranger Lunar probes and designed to investigate Mars, Venus and Mercury. Of the early concept studies, Mariner B was the most ambitious, involving a flyby and instrument landing on either Mars or Venus and later evolved into the Mariner-Mars project (Mariner 3 & 4). Mariner 2 was the first probe to encounter another planet when it flew past Venus. The Mariner Mars 71 mission was planned for both Mariner 8 & 9 although only Mariner 8 successfully reached orbit. Mariner 10 flew past Venus before going on to encounter Mercury.