Olga Pravdivtseva, Washington University (IMAGE) Washington University in St. Louis Caption Olga Pravdivtseva, research associate professor of physics in Arts & Sciences at Washington University in St. Louis, uses noble gas isotopes to study the formation and evolution of the early solar system. Pravdivtseva, a member of the McDonnell Center for the Space Sciences, is pictured in her laboratory in Compton Hall. Credit Whitney Curtis/Washington University Usage Restrictions For editorial purposes 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.