Comet Wild-2 (image) University of Arizona Caption This artist's impression shows the irregular surface of comet Wild-2 and jets spouting into space at speeds of several hundred kilometers per hour. A UA-led team of scientists now found evidence that Wild-2 harbored liquid water at some point in its history. Credit NASA/JPL-Caltech Usage Restrictions Image may only be used in conjunction with reporting/posting of this news release. 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.