A celestial body orbiting another larger celestial body is a satellite. An artificial satellite is an artificial object or transport that serves to work around the earth, the moon, as well as any other celestial body. Since october 4, 1957, humanity has been able to put artificial satellites into orbit around the earth. The russians were the first to launch sputnik,a small satellite that orbited the earth in just a few months and transmitted sound signals in 21 days. The usa launched its 1st satellite on january 31, 1958. This satellite was crowned explorer 1, and due to the data transmitted to the work by explorer 1, the researchers calculated the van allen radiation belts, places in interstellar space around the earth, and in addition the planets jupiter and saturn, sleepy arcade containing high-energy protons and electrons. Half a century ago, there were no artificial satellites. Since the launch of the satellite, more than 4,800 satellites have been launched by governments and individual companies on the territory of sveta. Satellites, of course, are used for satellite television, but there are much wider purposes in satellites. The moon is the moon; the earth is the satellite of the sun. The first is called the moon, the second is called the planet. Artificial satellites revolve around any celestial body, they are always called satellites, regardless of whether they revolve around the earth, the moon, the sun or some other celestial body. The distribution of television and audio signals, or telephone communication using the device is carried out using communication satellites. For this kind of communication forms, a satellite in a geostationary orbit is most often required. In 1964, the us department of defense launched the first satellite that was put into a geostationary orbit. Today, geostationary satellites are designed for voice, audio and video communications, such as satellite television via the dish satellite network. These satellites have provided great assistance to road transport enterprises, especially when transporting by water and after them by air. American gps satellites are available in low earth orbit (leo) and are able to determine the location accurately up to the first cm (0.4 inches). But such a somewhat accurate positioning is legal only for the needs of the army of purposes. For commercial use, the accuracy is less accurate. Navigation satellites are also used to measure distances, for example, between buildings. Observing the beds is the task of meteorological satellites, and later especially everything that has happened and is happening in the air. Specific types of cameras, such as infrared and private cameras, are used as video recording or for a certain part of the earth from a geostationary orbit, or more now from polar orbits, to obtain original images. These low-orbit meteorological satellites are more scattered on the study of the atmosphere than in the current weather itself. Very similar to meteorological satellites, military satellites are used, among other things, to admire the earth. Classically, with cameras with decent resolution and in addition to the usual communication equipment, they also use encryption. Sometimes these types of satellites have their own suitable varieties of orbits. For example, a very elliptical orbit that takes the satellite too far away from the earth, like the moon, and is already so close to the earth that a person soon means the atmosphere, in order to get closer to the upper layers of the planet – without falling back to work. Probably, many tactics are used, but for the following reasons: they are unknown. Observation of the beds for scientific purposes and beyond is well possible from satellites. For example, mapping with satellites with small polar orbits, as well as measuring the exact shape of the mp3juices.red earth, geological discoveries, etc. Can bring great benefits to scientific satellites. But scientific satellites are used not only to control the earth. Space exploration also benefits from the purchase of scientific satellites. For example, the hubble satellite, which turns out to be a huge telescope orbiting the earth. Since the hubble telescope does not need to “see” through the atmosphere, it gets a chance to create clearer and clearer images than terrestrial telescopes. Satellite network of satellite television.