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A satellite or an artificial satellite [a] is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting , navigation ( GPS ), broadcasting , scientific research, and Earth observation.
A satellite state or dependent state is a country that is formally independent but under heavy political, ... 1924. A nominally independent and sovereign country, ...
Satellite imaging of the Earth surface is of sufficient public utility that many countries maintain satellite imaging programs. The United States has led the way in making these data freely available for scientific use. Some of the more popular programs are listed below, recently followed by the European Union's Sentinel constellation.
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is ...
The following is a list of the largest satellite cities worldwide, with over 500,000 people. A satellite city is defined as subordinate to a central city in a business or infrastructure sense, and it may or may not have more population than the central city due to arbitrary municipal definitions. Excluded are transborder agglomerations.
Our neighbourhood’s new visitor is one of just a few seen in the past
Satellite cities are often separated from the central city by a substantial belt of rural or suburban territory, while twin cities may be fully integrated in physical form. For example, Fort Worth, Texas is a twin of Dallas, Texas because though Fort Worth is somewhat smaller, it is proportionally close enough and physically integrated enough ...
Globalstar, Inc (NYSE:GSAT) stock is trading higher Tuesday as Apple Inc (NASDAQ:AAPL) showcased iOS 18 with satellite messaging during its annual developer event. Now, iPhone 14 and later users ...