What is meant by Satellite?
The objects that move around the earth or any other planet constantly staying on their own orbits are known as satellite. For example, moon is the satellite of the planet ‘Earth’. The other planets of the solar region have also one or more satellite (S). Recently, the scientists have made artificial satellites and these are sent to the outer space through buster rockets.
Then they start to move round the earth. The equilibrium between the centrifugal power of satellite and the gravitation power of the earth enables the satellite to move round the earth keeping a specific distance from the earth. The way on which a satellite moves round the earth is known as orbit. Every satellite whether it is natural or artificial moves on its own specific orbit. In 1957, The then Soviet Union first sent satellite named ‘Sputnik’ in the space.
From then more than one thousand five hundred satellites have been sent to the space. Artificial satellites are made for different purposes such as, communication, scientific research, plane operations, weather forecasting, searching natural resources such as fish, gas, oil etc.
What is Communication Satellite?
Artificial satellite is a man-made satellite which moves round the earth continuously as like moon keeping a specific distance from the earth staying in a specific orbit with the help of a buster rocket. These are not made mere for move round the earth only. Each of them is made and sent to the space for a specific objective. Accordingly, communication satellites receive radio signals from different places of the earth and send them to its destinations on earth.
This type of satellites has made possible the development of worldwide television and telephone network system. A communication satellite is made up of two parts, namely-
- A receiver and
- A transmitter.
The receiver receives the signal from anywhere of the world and amplifies the signal with its amplifier machine and finally sends the amplified signal to its destination on the earth. In this way the communication satellite can disseminate any signal or message within a few seconds to the whole world. Generally, the satellite stations on the earth receive the amplified message sent by the satellites.
What is Satellite Television?
The objects that move around the earth or any other planet constantly staying on their own orbits are known as satellite. For example, moon is the satellite of the planet ‘Earth’. The other planets of the solar region have also one or more satellite (s). Recently, the scientists have made artificial satellites and these are sent to the outer space through buster rockets. Artificial satellites are sent to the space for different purposes such as, communication, scientific research, plane operations, weather forecasting, searching natural resources etc.
When television programs are broadcasted by means of artificial satellite stationed in the space, it is called satellite television. This satellite television has made possible world wide networks of different television channels. Therefore, cultures, ethnicity, traditions, customs of any country or region are disseminated across the world. Now a day, people are very much interested in enjoying TV programs broadcasted through satellite.