Mars (IMAGE) Dartmouth College Caption Astronauts feeling depressed or stressed on missions to Mars and other long-duration space flights may soon find computerized solace in the form of a virtual reality-based relaxation system being developed by Dartmouth College researchers and their colleagues. Credit NASA Usage Restrictions Credit: NASA 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.