X-shaped radio galaxy (IMAGE) Northwestern University Caption A still image taken from the 3D simulation of the natural development of an X-shaped jet. The gas (bright red) falls into the black hole, which launches a pair of relativistic jets (light blue). The jets propagate vertically and shock the ambient gas (dark red) The older cavities (dark blue) buoyantly rise at an angle to the vertically propagating jets to form the X-shape. Credit Aretaios Lalakos/Northwestern University Usage Restrictions Add credit 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.