Angles of response (IMAGE) University of Cologne Caption Simulated angles of response on Pluto (lelft), Earth (middle) and on a hypothedical planet (right). Each hill would be shaped differently according to the planet's gravity and the granule size of the material. Credit Filip Elekes 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.