Corotating Halo Gas Fueling Growth of Galactic Disk (image) W. M. Keck Observatory Share Print E-Mail Caption This is an artist conception of gas streams (blue) feeding a galactic disk. The inflow fuels new star formation, and because the infalling gas is spinning, the size of the disk grows. Credit James Josephides, Swinburne Astronomy Productions Usage Restrictions None 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.