Flatworms Returning from Space (IMAGE) Tufts University Caption Worms returning from five weeks in space curled up and were immobile when transferred to petri dishes containing fresh spring water. By contrast, stay-at-home control worms moved rapidly and fully extended themselves. Credit Junji Morokuma, Allen Discovery Center at Tufts University- 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.