Felix and Anish unravel the fascinating saga of NASA's Mariner missions, the trailblazing spacecraft that paved the way for interplanetary exploration. From the heartbreaking failures of Mariner 1 and Mariner 3 to the triumphant successes of Mariner 2’s Venus flyby and Mariner 4’s first-ever images of Mars, the duo dives into the highs and lows of these historic missions. Discover how Mariner 9 became the first Mars orbiter and how Mariner 10 used Venus’s gravity to explore Mercury. Along the way, Felix and Anish explore the science, engineering, and sheer determination that turned these missions into milestones in space exploration.