The search for life on Mars has been a decades-long endeavor, marked by both triumph and heartbreak. From the early, failed attempts of the Soviet Mars missions to the groundbreaking successes of NASA's Viking and Pathfinder probes, each mission has brought us closer to understanding the Red Planet's mysterious past. Through the eyes of these robotic explorers, we have witnessed the dramatic landscape of Mars, from its ancient riverbeds to its towering volcanoes, and have begun to piece together the story of a world that was once much more like our own.