In KSC’s Spacecraft Assembly and Encapsulation Facility-II (SAEF-II), the Advanced Composition Explorer (ACE) spacecraft is encapsulated and placed into the transporter which will move it to Launch Complex 17A. Scheduled for launch on a Delta II rocket from Cape Canaveral Air Station on Aug. 24, ACE will study low-energy particles of solar origin and high-energy galactic particles. The collecting power of instruments aboard ACE is 10 to 1,000 times greater than anything previously flown to collect similar data by NASA KSC-97PC1234