NN Serpentis Artist's impression (IMAGE) University of Warwick Caption This is an artist's impression of the star system NN Serpentis which looks like, and may even once have behaved like, a game of snooker. Credit University of Warwick and Mark A. Garlick Usage Restrictions None 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.