Assistant Professor Randall McEntaffer, with the Department of Physics and Astronomy discusses his research with x-ray spectrum analysis of the sun's solar winds with Congressman Dave Loebsack at the University of Iowa Physics and Astronomy Labs in Van Allen Hall on Tuesday, March 18, 2014. Loebsack toured the facilities and met with researchers and faculty to discuss the work being done at the facility. (Justin Torner/Freelance for the Gazette)