State two essential features of a geostationary satellite.

Hint: A geostationary satellite is defined as an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction in which the earth rotates (west to east).

Complete step-by-step solution:
A satellite is defined as an object that moves around a larger object. Earth is known as a satellite because it moves around the sun. A natural satellite is known as an astronomical body that orbits a planet in the solar system. While an artificial satellite is an object that humans have made and launched into orbit using rockets
The concept of a geostationary orbit was used as a way to revolutionize telecommunications. The very first satellite which is placed in this kind of orbit was launched in 1963.
Two very essential features of a geostationary satellite are:
1) The period of revolution of the geostationary satellite around the earth should be the same as that of the earth about its own axis i.e. 24 hours
2) The sense of rotation of the geostationary satellite should be the same as that of the earth about its own axis, i.e. in anticlockwise direction from west to east.

Note: Geostationary satellites are used for the purpose of:
1) It is used to detect the behavior of outer space.
2) Its function is to keep an eye on black holes, meteors, asteroids, and stars, etc.
3) It is used for the purpose of navigation.
4) They are used for communication because it eliminates the need for ground stations.