Sign up for our NewsAlert service and have the latest news in astronomy and space e-mailed direct to your desktop. Enter your e-mail address: Privacy note: your e-mail address will not be used for any other purpose. Liberty rocket emerges from shadow of defunct Ares 1 BY STEPHEN CLARK SPACEFLIGHT NOW Posted: February 8, 2011 WASHINGTON -- ATK and Astrium are joining the growing crowd of companies