Working on the 'Vomit Comet' (IMAGE) University of Utah Caption University of Utah chemist Lorraine Siperko (right) works on a water quality monitoring system while experiencing weightless conditions at the top of an arc-shaped flight path by a NASA C-9 research plane nicknamed the "vomit comet." Other scientists working on the project include Bob Lipert of Iowa State University (left) and John Straub of Wyle Laboratories. Credit NASA. Usage Restrictions Credit NASA. 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.