Research topic: Orbiting Solar Observatory

Orbiting Solar Observatory (OSO), series of eight orbiting observatories (see observatory, orbiting ) launched between 1962 and 1971 by the National Aeronautics and Space Administration (NASA) to study the sun in the ultraviolet and X-ray wavelengths filtered out by the earth's atmosphere. The third to be launched, OSO-C, failed to achieve orbit. The other seven studied solar ultraviolet radiation and cosmic rays, measured radiation levels in the Van Allen radiation belts , detected neutrons, and investigated X-ray sources in the Milky Way and beyond. Through continuous monitoring of the... Read more