Strength of Gravity (IMAGE) University of Arizona Caption Illustration of the different strengths of gravitational fields probed by cosmological, solar-system and black-hole tests. Credit D. Psaltis, UArizona; NASA/WMAP; ESA/Cassini; EHT collaboration Usage Restrictions This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated. 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.