Space engineers say the rock - which has been donated by the Natural History Museum in London - will be used to calibrate detectors on board the robot rover Perseverance after it lands and begins its search for signs of past life on the planet.
太空工程师表示，这块由伦敦自然历史博物馆捐赠的岩石，将在“毅力号”探测器着陆后，用于校准机器人的探测器，并开始寻找火星上生命存在过的迹象。