The Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) spacecraft, built by John Hopkins Applied Physics Laboratory (APL), was launched today from Cape Canaveral Air Force Station aboard a three-stage Boeing Delta II Rocket. Hi-Shear Separation bolts and Initiators were used on the Delta II, and Hi-Shear Separation Nuts and NASA Standard Initiators (NSI's) were used on the MESSENGER. Its life is about one year.

MESSENGER leaves launch pad 17-B at Cape Canaveral Air Force Station