A United Launch Alliance (ULA) Atlas V rocket is scheduled to launch the Space Test Program-3 (STP-3) mission at 4:04 a.m. EST (0904 GMT) Tuesday from Cape Canaveral Space Force Station in Florida. You can watch the launch live here at Space.com, courtesy of ULA, or directly via the company. STP-3 was originally supposed to launch on Sunday (Dec. 5), but that plan was nixed after crews discovered a leak in the ground system that stores rocket propellant at Cape Canaveral. Fixing the leak and verifying that all is now well with the system resulted in a 48-hour delay... STP-3...