Explosion Reaches Surface of Star (image) University of Chicago Share Print E-Mail Caption As the bubble rises through the star, its upward velocity increases due to the stronger gravity away from the center of the star, which makes the bubble more buoyant. The complexity of the top surface of the bubble continues to increase, due to the action of the heavy-over-light fluid instability. In this snapshot, the bubble has reached the surface of the star and begins to break through. Credit University of Chicago Flash Center Usage Restrictions This image may be used to illustrate news reports in connection with the findings described in this news release. Share Print E-Mail 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.