robotic Sojourner rover vehicle on the surface of Mars sampling the large rock known as Yogi". "Yogi" was the second rock to have its composition studied by Sojourner with its Alpha-Proton X-Ray Spectrometer (APXS). Sojourner also carries a high-resolution camera. It's tracks are seen in the fine soil. The rover weighs 9 kg, is 63cm long and 48cm wide. It is powered by a solar panel which allows for a few hours movement per day, and is controlled by an operator on Earth. Part of a 360 degree panorama taken by the Imager for Mars Pathfinder (IMP) on the 8th, 9th and 10th Martian days spent on Mars since it landed on 4 July 1997."