Lorraine Siperko, University of Utah (IMAGE) University of Utah Caption University of Utah chemist Lorraine Siperko experiences weightlessness during a flight aboard a NASA "vomit comet" aircraft. Siperko made several such flights to test a new system designed to monitor drinking water quality aboard spacecraft. The system includes a commercially available color sensor (blue device in foreground) that checks the level of disinfectant in drinking water. The water quality monitoring system was delivered to the International Space Station in August for six months of tests. 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.