Overview
Apollo 15 was the fourth human lunar landing, the first science-focused mission, the first to have a crew stay on the Moon's surface for 3 days, and the first to bring a Moon car along. Across 18 hours of moonwalking, Scott and Irwin drove the Moon car 27.9 km. Just before leaving lunar orbit, the crew deployed a small satellite to study the plasma, particle, and magnetic field environment.