Visualization of Heliosphere Shape (IMAGE) NASA/Goddard Space Flight Center Caption An updated model suggests the shape of the Sun's bubble of influence, the heliosphere (seen in yellow), may be a deflated croissant shape, rather than the long-tailed comet shape suggested by other research. Credit Opher, et al. 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.