James Day, University of Maryland (IMAGE) University of Maryland Caption Professor James Day looking at a portion of the meteorite in the University of Maryland's isotope geochemistry lab. In the background is one of the mass spectrometers used to analyze the meteorite samples. Credit University of Maryland 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.