Gravitational Wave Spectrum Infographic (IMAGE) NASA/Goddard Space Flight Center Caption The length of a gravitational wave, or ripple in space-time, depends on its source, as shown in this infographic. Scientists need different kinds of detectors to study as much of the spectrum as possible. Credit NASA's Goddard Space Flight Center Conceptual Image Lab Usage Restrictions No restrictions. License Public Domain 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.