Artist's impression of Pulsar (IMAGE) International Centre for Radio Astronomy Research Caption An artist's impression of Pulsar -- a dense and rapidly spinning neutron star sending radio waves into the cosmos. Credit Credit: ICRAR / Curtin University. Usage Restrictions Free to use with attribution. 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.