Illustration of Earth and Venus (IMAGE) NASA/Goddard Space Flight Center Caption Since Earth, right, and Venus, left, are so close in size and yet so different in terms of their prospects for habitability, Stephen Kane, an exoplanets expert at the University of California, Riverside, is interested in developing methods for distinguishing Earth- and Venus-analogs in other planetary systems, as a way of identifying potentially habitable terrestrial planets. Credit NASA/JPL-Caltech/Ames 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.