NewsAlert 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.		BY JUSTIN RAY Follow the countdown and launch of the ULA Delta 2 rocket with NASA's GLAST observatory. Reload this page for the very latest on the mission.				See the launch in high-def Spaceflight Now Plus subscribers can now enjoy high definition video clips of Discovery's launch. Beccome a subscriber today.