Philipp Heck, University of Chicago (2 of 2) (image) University of Chicago Share Print E-Mail Caption Philipp Heck with the Chicago Center for Cosmochemistry's time-of-flight mass spectrometer, which can reveal the chemical composition of minute experimental samples. Heck and his associates used a magnetic sector mass spectrometers in their latest study on interstellar dust grains. Credit Dan Dry Usage Restrictions News organizations may use this image in connection with reports describing the research of Philipp Heck and his associates. Share Print E-Mail 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.