Waterfall-plots-of-the-eight-signals-of-interest (IMAGE) SETI Institute Caption Waterfall plots of the eight signals of interest. Each panel has a width of 2,800 Hz and the x axes are referenced to the centre of the snippet where the signal is found, as reported in column 3 of Table 1. Credit SETI Institute Usage Restrictions publish with credit 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.