A Tethered Miniature Lightsail (IMAGE) California Institute of Technology Caption A microscope image of the Caltech team's "miniature trampoline," a tiny lightsail tethered at the corners for direct radiation pressure measurement. Credit Caltech Usage Restrictions none License Original 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.