First mission to explore two planets in a single mission

NASA's Mariner 10 was a pioneering mission that marked a milestone in space exploration by being the first to explore two planets, Mercury and Venus, in a single mission. This mission provided critical data about the inner solar system and significantly advanced our understanding of planetary science. Mariner 10's flyby of Mercury allowed scientists to gather detailed information about its surface, magnetic field, and exosphere, which were previously unknown. The spacecraft's innovative use of solar wind for orientation was a groundbreaking technique that enhanced its navigational capabilities, allowing it to effectively maneuver through the harsh environment of space. Additionally, Mariner 10 captured the first photograph of Venus from space, providing a new perspective on the planet's thick atmosphere and surface conditions. The data collected from this mission laid the groundwork for future explorations and studies of both Mercury and Venus, influencing subsequent missions and research in planetary science.