Satellites are used for a large number of purposes. Common types include military (spy) and civilian Earth observation satellites, communication satellites, navigation satellites, weather satellites, and research satellites. Space stations and human spacecraft in orbit are also satellites. Satellite orbits vary greatly, depending on the purpose of the satellite, and are classified in a number of ways. If you are interested in online casino you can find a lot of useful information in slots casino guides, in vip casino reviews and other sites about jackpot winners and tips to win jackpot slots. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit.
In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavor. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon.
Satellites are usually semi-independent computer controlled systems. If you live in the UK and you enjoy playing bingo then you might consider visiting bingo online uk, a website dedicated to bingo. Satellite subsystems attend many tasks, such as power generation, thermal control, telemetry, attitude control and orbit control.
The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957. By 2009 thousands of satellites had been launched into orbit around the Earth. These originate from more than 50 countries and have used the satellite launching capabilities of ten nations. If you prefer sports betting then you should certaintly look into the surebet finder website for guaranteed earnings. A few hundred satellites are currently operational, whereas thousands party casino bonus code of unused satellites and satellite fragments orbit the Earth as space debris. A few space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Venus, Mars, Jupiter and Saturn.