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Satellites are...

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Satellites

It was on October 4, 1957, that the first man-made object ever achieved orbit around Earth in outer space. The Russian satellite Sputnik was designed to measure and transmit information about the density of the upper atmosphere as it circled the Earth. Before then, all atmospheric information that meteorologists had was based on "looking up" instead of "looking down." Since Sputnik, the science of satellites has advanced significantly. Specialized satellites now orbit the Earth for telecommunications, global broadcasting, oceanic observations, scientific research, and military purposes, as well as for atmospheric observation. It's amazing to consider the rapid progress and evolution of satellite technology.

Meteorological satellites themselves have changed considerably since Sputnik. Weather observation and forecasting has become much more reliable today, thanks to the sophisticated satellites currently orbiting Earth. Find out more about them by exploring Satellite History, Satellite Science, and Satellite Images.

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