Research Searching for Surfaces on Exoplanets An artist’s concept of how Kepler-1649c could look like from its surface. Credit: NASA/Ames Research Center/Daniel Rutter. Sediment Transport and Dune Formation in the Outer Solar System Sand ripples seen at Coral Pink Sand Dunes State park. Clouds and Hazes in Planetary and Exoplanetary Atmospheres Hazy sunset seen on an airplane.