Rodent Research-8 (RR-8): Today crewmembers stowed the two Rodent Research-7 Habitats and then installed Rodent Research-8 Habitats 1 and 3 in preparation for SpX-16 arrival. The RR-8 investigation utilizes mice flown aboard the ISS, and maintained on Earth, to investigate the physiology of aging in response to microgravity and the role of aging in the …