The Volatiles Investigating Polar Exploration Rover (VIPER) on Griffin Mission 1 (TO 20A) is a lunar rover designed to search the regolith for water ice and other volatiles in the Moon's south polar region over a 100-day duration mission in late 2025. The primary objectives are to learn about the origin and distribution of water on the Moon, and to help determine how to harvest the Moon's resources for future human exploration. It will also be a technology demonstration mission for operations in extreme low temperatures, dynamic lighting conditions, and rugged terrain, as well as for power generation and storage technologies. VIPER is part of NASA's Commercial Lunar Payload Services (CLPS) initiative, in which NASA contracts with a commercial partner that provides the launch and lander.