Mars samples refer to physical samples of rock, soil, and other materials collected from the surface of Mars for analysis and study. These samples are collected by various robotic missions, such as the Mars Rover missions, and are usually returned to Earth for further examination in laboratories. The analysis of these samples can provide valuable insights into the geology, climate, and potential for past or present life on Mars. Studying Mars samples is essential for advancing our understanding of the planet's history and potential for habitability.