Galactic Radiation and Background

From Spacefaring

Revision as of 12:46, 2 September 2025 by John (talk | contribs) (Bot: Automated import of articles *** existing text overwritten ***)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Q1322903




Galactic Radiation and Background (GRAB) was the first successful United States orbital surveillance program, comprising a series of five Naval Research Laboratory electronic surveillance and solar astronomy satellites, launched from 1960 to 1962. Though only two of the five satellites made it into orbit, they returned a wealth of information on Soviet air defense radar capabilities as well as useful astronomical observations of the Sun.