宇宙開発
The "Sojourner" is a six-wheeled 65 cm long vehicle, 48 cm wide, 30 cm tall and weighing 10.5 kg. Its maximum speed reached one centimeter per second. "Sojourner" travelled approximately 100 metres in total, never more than 12 m from the "Pathfinder" station. During its 83 sols of operation, it sent 550 photographs to Earth and analyzed the chemical properties of 16 locations near the lander. (See also Space exploration rovers)