Chunhui Xu, left, associate professor at Emory University School of Medicine and principal investigator for the Generation of Cardiomyocytes from Induced Pluripotent Stem Cells experiment, and Gene Boland, chief scientist of Techshot, address NASA Social participants during a What’s on Board science briefing at the agency’s Kennedy Space Center in Florida on March 5, 2020. The briefing provided a closer look at some of the payloads launching on SpaceX’s 20th Commercial Resupply Services (CRS-20) mission to the International Space Station. The company’s Falcon 9 rocket is scheduled to lift off from Cape Canaveral Air Force Station’s Space Launch Complex 40 at 11:50 p.m. EST on March 6, 2020.