What is satellite ? Gives its types and uses.

Explanation

`implies` A body revolving around a planet in the direction of revolution of planet is called satellite.
`implies` Motion of satellite is very similar to the motion of planets around the sun hence Kepler.s law of planetary motion are equally applicable to them. Their orbits around the earth are circular or elliptic.
`implies` There are two types of satellite :
(i) Natural satellite :
Moon is the natural satellite of the earth with a time period of approximately 27.3 days. It is equal to the rotational period of the moon about its own axis. Planet Jupiter has many satellites.
(ii) Artificial satellite :
The first artificial satellite made by the man kind was Sputnik put into orbit around the earth by Russian scientist in 1957. India (19, April 1975) also successfully launched "Aryabhatta. and .INSAT" series of satellite.
`implies` Satellite are used for scientific, engineering, communication, whether forecast, spying and  military geophysics and meteorology.