Quark Core Inside Neutron Star (IMAGE) University of Helsinki Caption Confirming the existence of quark cores inside neutron stars has been one of the most important goals of neutron star physics for the last 40 years. Credit Jyrki Hokkanen, CSC - IT Center for Science Usage Restrictions Credit must be mentioned: Jyrki Hokkanen, CSC - IT Center for Science 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.