Category Scope

89 Astronomy

Includes observations of celestial bodies; astronomical instruments and techniques; radio, gamma-ray, x-ray, ultraviolet, and infrared astronomy; and astrometry.

Definition

Astronomy – The science that treats of the location, magnitudes, motions, and constitution of celestial bodies and structures. The science now includes a number of specialized branches such as radio astronomy, X-ray astronomy, astrometry, astrophysics, celestial mechanics, and cosmology. NASA Thesaurus, Washington, DC: National Aeronautics and Space Administration.

NASA Interest

Exhaustive Interest : Except for astrophysics, all facets of astronomy including radio and gamma-ray astronomy, observations of celestial bodies, their structure, motions, and locations.

Input Subjects of Specific Interest