speed of light saturation (IMAGE) DOE/Brookhaven National Laboratory Caption As nuclei are accelerated close to the speed of light, they become flattened like pancakes. This flattening causes the large number of gluons within the nuclei—generated by individual gluons splitting—to overlap and recombine. If gluon recombination balances out gluon splitting, the nuclei reach a steady state called gluon saturation. Credit Brookhaven National Laboratory Usage Restrictions OK for use with stories about this research. 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.