Alphabetical Listing of Astronomy Acronyms
- MSOCC — Multisatellite Operations Control Center
- MSS — Multispectral Scanner
- MSU — Microwave Sounding Unit
- MTC — Man Tended Capability
- MTFF — Columbus Man-Tended Free-Flyer
- MTPE — Mission To Planet Earth
- MVI — Microgravity Vestibular Investigation
- NACA — National Advisory Committee On Aeronautics
- NAS — Numerical Aerodynamic Simulation
- NASA — National Aeronautics And Space Administration
- NASDA — NAtional Space Development Agency
- NASM — National Air And Space Museum
- NASP — National AeroSpace Plane
- NBS — National Bureau of Standards
- NDV — NASP Derived Vehicle
- NERVA — Nuclear Engine For Rocket Vehicle Application
- NESDIS — National Environmental Satellite Data And Information Service.
- NGC — New General Catalog
- NGT — NASA Ground Terminal
- NICMOS — Near Infrared Camera/Multi Object Spectrometer
- NIMS — Near Infrared Mapping Spectrometer
- NIR — Near InfraRed
- NIST — National Institute For Standards And Technology
- NLDP — National Launch Development Program
- NOAA — National Oceanic And Atmospheric Administration
- NOAO — National Optical Astronomy Observatories
- NOCC — Network Operations Control Center
- NORAD — NORth American Aerospace Defense
- NPO — Scientific Production Organization
- NPO-PM — NPO Prikladnoi Mekhaniki
- NPOE — NPO Energiya
- NRAO — National Radio Astronomy Observatory
- NRL — Naval Research Laboratory
- NRO — National Reconnaissance Office
- NRSC — National Remote Sensing Centre
- NRSC — National Remote Sensing Centre
- NS — Neutron Star
- NSA — National Security Agency
- NSF — National Science Foundation
- NSI — NASA Science Internet / NASA Standard Initiator / National Environmental Satellite Data And Information Service
- NSO — National Solar Observatory
- NSSDC — National Space Science Data Center
- NTR — Nuclear Thermal Rocket(ry)
- NTT — New Technology Telescope
- OAO — Orbiting Astronomical Observatory
- OARE — Orbital Acceleration Research Experiment
- OCGF — Organic Crystal Growth Facility
- OCST — Office of Commercial Space Transportation
- OCTS — Ocean Color And Temperature Scanner
- OCTW — Optical Communications Through The Shuttle Window
- OGO — Orbiting Geosurvey Observatories
- OMB — Office of Management And Budget
- OMDP — Orbiter Maintenance Down Period
- OMS — Orbital Maneuvering System
- OPF — Orbiter Processing Facility
- ORBI — Stock Ticker Symbol For OSC
- ORFEUS — Orbiting And Retrievable Far And Extreme Ultraviolet Spectrometer
- OSC — Orbital Sciences Corporation
- OSCAR — Orbiting Satellite Carrying Amateur Radio
- OSS — Office of The Space Station
- OSSA — Office of Space Science And Applications
- OSSE — Oriented Scintillation Spectrometer Experiment
- OSTP — Office of Science And Technology Policy
- OTA — Optical Telescope Assembly
- OTFE — Oscillatory Thermocapillary Flow Experiment
- OTHB — Over The Horizon Backscatter
- OTV — Orbital Transfer Vehicle
- OV — Orbital Vehicle
- PAM — Payload Assist Module
- PAM-D — Payload Assist Module
- PARE — Physiological And Anatomical Rodent Experiment
- PASS — Primary Avionics Software System
- PC — ParseC (usu. Pc)
- PCG — Protein Crystal Growth Experiment
- PCGG — PCG Glovebox
- PCT — Photometric Calibration Test
- PDE — Particle Dispersion Experiment
- PDRS — Payload Deployment And Retrieval System
- PDS — Planetary Data System
- PEM — Payload Electronics Module
- PEM — Particle Environment Monitor
- PHA — Physics And Astronomy
- PI — Principal Investigator
- PLB — Payload Bay
- PLBD — Payload Bay Doors
- PLSS — Portable Life Support System
- PM — Pressurized Module
- PMC — Permanently Manned Capability
- PMIRR — Pressure Modulated InfraRed Radiometer
- PMS — Pre-Main Sequence
- PMT — PhotoMultiplier Tube
- PN — Planetary Nebula
- POCC — Payload/Platform Operations Control Center
- POEM — Polar Orbiting Earth Mission
- POP — PO Polyot
- PPF — Columbus Polar Platform
- PPM — Positions And Proper Motions (catalog)
- PRTLS — Powered RTLS
- PSF — Point Spread Function
- PSR — PulSaR