SAM is a miniature chemistry lab on Curiosity rover, which contains a pack of instruments to find the secrets of Mars. SAM, the Sample Analysis at Mars, and its mission is to the figure out the past and present chemistry of the Red Planet.
SAM is different from the chemistry labs on earth in a way that all the instruments that it contains are highly precise and sensitive because we don’t know what we will find on MARS and if the instruments are not sensitive enough the measurements can be inaccurate. It will be analyzing the rocks, debris and air samples and send back the results to Earth.
Credit: NASA’s Goddard Space Flight Center