The Opportunity rover, the robot that uses solar power of the US space agency has made the furthest journey to Mars kilometres in 2004 and now is holding the world record as well as beat the previous record made by the Soviet Union’s Lunokhod 2 rover in 1973 when it arrived on the Moon. Even though it was intended to travel for only one kilometre, Opportunity travel 25 miles or 40 kilometers which can found the moist conditions on Mars and is now used to explore more parts of the planet