Artist's Impression of Pulsating Star (video) University of Sydney Share Print E-Mail Loading video... Caption Artist's impression of pulsating star. Credit Gabriel Pérez Díaz (IAC) Usage Restrictions For this story only. Share Print E-Mail 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.