NASA and the United States Weather Bureau launch the first test article of the next-generation weather satellite, Nimbus-1. Using the more advanced camera technology (including infrared filters to watch cloud motion even on Earth’s night side) tested aboard TIROS-8, Nimbus-1 provides a vast improvement on satellite weather observations over the hardware on the TIROS experimental satellites. The first Nimbus satellite remains in service for only a month; later Nimbus satellites continue to be launched into service well into the late 1970s, and most of them remain operational into the 1980s.
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