Man made or artificial
satellites (sub planets) are launched into the space with the help of rockets.
1)
There are two major kinds of
artificial satellites. They are; a)
Earthly Satellite b) Polar Satellite
2)
Earthly Satellite is made stable
from the earth at the height of 33000 to 35000km.
3)
With the help of rocket, the
satellite moves as the earth moves with the speed.
4)
Indian satellites are sent form
Satish Dhawan Centre at Shriharikota.
5)
Earthly satellite is known as
Insat.
6)
Polar satellite has gone upto 800
to 850 km from the earth.
7)
They travel from north to South
Pole and return to North Pole.
8)
IRS series satellite is a polar
satellite.
9)
The advantages of satellite are
broadcasting of television programmes, mobile and telephone communication,
study of environment and temperature, taking pictures and making maps of the
earth and the study of natural wealth.
