Terms & Abbreviations: M

MCC

Mission Control Center. Popularly known as “Houston” (as in “Houston, we have a problem”)

MIT

Massachussets Institute of Technology. In these memos, MIT is shorthand for the MIT Instrumentation Laboratory, created and led by avionics pioneer Charles Stark Draper. It is now known as the Charles Stark Draper Laboratory and became independent of MIT in 1973.

MPAD

Mission Planning and Analysis Division (part of MSC).

MSC

Manned Spacecraft Center. Now known as Johnson Space Center.

MSFC

Marshall Space Flight Center

MSFN

Manned Space Flight Network (pronounced "misfin").