NASA - Renal Stone Risk During Spaceflight: Assessment and .Nov 22, 2016 . International Space Station . The Renal Stone experiment collects urine samples from crewmembers and tests a possible countermeasure for.station for crushing stones ozgur cecen,NASA - Renal Stone Risk During Space Flight: Assessment and .Apr 12, 2008 . These small crystals can develop to form renal stones. . environment inside the International Space Station and other spacecraft -- results in a.