From left to right: Dr. Oliver Ullrich from the University of Zurich, Dr. Ye Zhang and Dr. Howard Levine of NASA's Kennedy Space Center, and Dr. Cora Thiel of the University of Zurich stood in the Space Station Processing Facility on Dec. 18, 2018. NASA recently signed a Space Act Agreement with the university, which is located in Switzerland, to collaborate on biological research. The team is studying gene expression in altered gravity.