Siglas de Sistema de Información Espacial
Astronomia y espacio
Siglas de SETI (Search for Extra-Terrestial Intelligence) Intercept System
Siglas de Square Kilometre Array
Siglas de Satellite Lake Observatory Initiative
Siglas de Sociedad Malagueña de Astronomía
Siglas de Small Magellanic Clouds
Siglas de SuperNova of Type II
Siglas de Starry Night Backyard
Siglas de Super Nova Remnant
Siglas de Stratospheric Observatory For Infrared Astronomy
Siglas de Standards Of Fundamental Astronomy
Siglas de Space Physics Aeronomy Research Collaboratory
Siglas de Special People Admiring Meteors
Siglas de Short Period Comet
Siglas de Upsala General Catalog
Siglas de U Gem variable type star (Z Camelopardalis subtype)
Siglas de U Gem variable type star (WZ Sagittae sub-type)
Siglas de U Gem variable type star (SS Cygnus subtype)
Siglas de Ultra High Molecular Weight
Siglas de Ultra High Transmission Coatings
Siglas de Ultra-wide Low- Distortion lens
Siglas de Ultra Metal-Poor
Siglas de Uranian Ring Plane
Siglas de Unidentified Red Object
Siglas de Uranian Ring Plane Crossing
Siglas de United States Air Force Academy
Siglas de Unusual Star Shape
Siglas de Ultraviolet - Visible
Siglas de Variable Frequency
Siglas de Very Long Baseline
Siglas de Very Large Telescope
Siglas de Valley of the Moon Observatory Association
Siglas de Valley of the Moon Observatory
Siglas de Virtual Public Observatory
Siglas de VISTA Project Office
Siglas de Vacuum Tower Telescope
Siglas de Vereniging Voor Sterrenkunde
Siglas de Viewing Zenith Angle
Siglas de Washington Area Astronomers
Siglas de Westchester Amateur Astronomers
Siglas de Western Amateur Astronomers
Siglas de Wide Angle Converter Lens
Siglas de Wide Angle Converter
Siglas de Wide-base Arecibo Pulsar Processor
Siglas de Wide Angle Tail
Siglas de Wide Angle Search for Planets
Siglas de Wide-Angle X-ray Diffraction
Siglas de Wide Area Vertical Expansion
Siglas de Wide Angle X-ray Scattering
Siglas de WideBand High Frequency
Siglas de Wide Band Filter Imager
Siglas de Worst Case Fresnel Zone
Siglas de Window Correction Table
Siglas de White Dwarf
Siglas de White Dwarf Mass Function
Siglas de Washington Double Star Catalog
Siglas de Whole Earth Blazar Telescope
Siglas de Whole Earth Telescope
Siglas de Wide Field Astronomy Unit
Siglas de Wide Field Astronomy Panel