Matteo Luisi (IMAGE) West Virginia University Caption An international team led by West Virginia University researchers studied RCW 120 to analyze the effects of stellar feedback, and found that RCW 120 must be less than 150,000 years old, which is very young for such a nebula. Credit West Virginia University 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.