Wobble Method (IMAGE) University of California - Riverside Caption The 'wobble,' or radial velocity technique for finding planets relies on the movement of the stars created as they're circled by their planets. The blue wave represents movement toward Earth, while the red wavelength occurs as the star heads away. Credit (NASA/JPL-Caltech) 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.