ESA astronaut Luca Parmitano (IMAGE) NASA/Johnson Space Center Caption ESA astronaut Luca Parmitano works on the BioRock experiment on the International Space Station, a precursor to the BioAsteroid project. Credit ESA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.