A Tiny Exoplanet (IMAGE) Iowa State University Caption The Kepler spacecraft finds planets beyond our solar system by detecting changes in star brightness when a planet passes in front of a star. Credit NASA/Kepler Mission/Wendy Stenzel 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.