NSF-OCI National Science Foundation Office of CyberInfrastructure

NSF-OPP National Science Foundation Office of Polar Programs

NSF-PHY National Science Foundation Division of Physics

NSO National Solar Observatory

NuSTAR Nuclear Spectroscopic Telescope Array

NVSS NRAO VLA Sky Survey

OECD Organisation for Economic Co-operation and Development

OHEP Office of High Energy Physics (DOE)

OIR optical and infrared; Optical and Infrared Astronomy from the Ground, Panel on

OSTP Office of Science and Technology Policy

PAG Particle Astrophysics and Gravitation, Panel on

PASAG Particle Astrophysics Scientific Assessment Group

PLATO Planetary Transits and Oscillations of Stars

PPP Program Prioritization Panel

PSF Planetary Systems and Star Formation, Panel on

R&A research and analysis

R&D research and development

R&E research and education

ReSTAR Renewing Small Telescopes for Astronomical Research

REU Research Experiences for Undergraduates

RFI request for information

RMS radio, millimeter, and submillimeter; Radio, Millimeter, and Submillimeter Astronomy from the Ground, Panel on

RXTE Rossi X-Ray Timing Explorer

SALT South African Large Telescope

SDO Solar Dynamics Observatory

SDSS Sloan Digital Sky Survey

SETI Search for Extraterrestrial Intelligence

SFP Science Frontiers Panel

SIM Space Interferometry Mission

SKA Square Kilometer Array

SKA-low Square Kilometer Array, low-frequency

SMA Submillimeter Array

SMD Science Mission Directorate (NASA)

SMEX Small Explorer

SOAR Southern Astrophysical Research