Dust Grains in Quasar Wind (Illustration) (IMAGE) NASA/Goddard Space Flight Center Caption An artist's illustration of dust grains blowing in the winds of a quasar, or active black hole. Credit NASA/JPL-Caltech 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.