Meaning of OSO

OSO

Pronunciation: [key]
— U.S. Aerospace. U.S. Aerospace.
  1. Orbiting Solar Observatory: one of a series of scientific satellites, launched between 1962 and 1975, that studied the sun at ultraviolet, x-ray, and gamma-ray wavelengths.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.