On This Day in Space: May 17, 1974: NASA Launches 1st Synchronous Meteorological Satellite.
On May 17, 1974, NASA launched the first Synchronous Meteorological Satellite, SMS-1. This was the first satellite designed to monitor meteorological conditions from a geostationary orbit. This kind of orbit allowed it to stay above a fixed location as Earth rotates. One of the instruments on this spacecraft was a visible infrared spin-scan radiometer (VISSR), …