Day: February 26, 1969

ESSA-9

ESSAThe recently-rechristened Environmental Sciences Service Administration launches, with the help of NASA, ESSA-9, the latest in a constellation of weather satellites. ESSA-9 is the last weather satellite to carry the ESSA designation, as the government reorganizes ESSA into a new agency, NOAA, the following year. ESSA-9 remains in service until 1972.