Sample Analysis at Mars (SAM) (IMAGE) American Geophysical Union Caption A measurement by the SAM instrument, shown dismounted from the Curiosity Rover, has confirmed that some meteorites found on Earth originated from Mars. Credit NASA-GSFC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.