Synchronous Meteorological Satellite
Encyclopedia
For the Synchronous Meteorological Satellite (SMS) program, NASA
NASA
The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...

 developed two weather satellite
Weather satellite
The weather satellite is a type of satellite that is primarily used to monitor the weather and climate of the Earth. Satellites can be either polar orbiting, seeing the same swath of the Earth every 12 hours, or geostationary, hovering over the same spot on Earth by orbiting over the equator while...

s which were placed into geosynchronous orbit
Geosynchronous orbit
A geosynchronous orbit is an orbit around the Earth with an orbital period that matches the Earth's sidereal rotation period...

. SMS-1 was launched May 17, 1974 a and SMS-2 was launched February 6, 1975. Both satellites were carried to orbit by Delta 2914
Delta 2000
The Delta 2000 series was an American expendable launch system which was used to conduct forty-four orbital launches between 1974 and 1981. It was a member of the Delta family of rockets. Several variants existed, which were differentiated by a four digit numerical code.The first stage was an...

 rockets. The program was initiated after the successes achieved by the Applications Technology Satellite research satellites, which demonstrated the feasibility of using satellites in geosynchronous orbit for meteorology
Meteorology
Meteorology is the interdisciplinary scientific study of the atmosphere. Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the 18th century. The 19th century saw breakthroughs occur after observing networks developed across several countries...

. The Geostationary Operational Environmental Satellite
Geostationary Operational Environmental Satellite
The Geostationary Satellite system, operated by the United States National Environmental Satellite, Data, and Information Service , supports weather forecasting, severe storm tracking, and meteorology research. Spacecraft and ground-based elements of the system work together to provide a continuous...

 program, which now supports weather forecasting, severe storm tracking, and meteorology research in the United States, followed immediately after the SMS program; the GOES 1
GOES 1
GOES 1, designated GOES-A and SMS-C prior to entering service, was a weather satellite operated by the United States National Oceanic and Atmospheric Administration. It was the first Geostationary Operational Environmental Satellite to be launched....

satellite was initially designated SMS-C. SMS-1 and -2, and GOES-1, -2, and -3 were essentially identical.
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