Artificial satellites are man-made satellites that revolve around the Earth and are different from the natural satellites. These man-made satellites are launched from the Earth and revolve around it in a much closer orbit than the moon.
India has launched many satellites and contributed to the development of various fields.
The first Indian satellite is Aryabhata, which was named after a famous ancient Indian Astronomer.
Other Indian satellites:
Applications of satellites:
There are many practical applications of artificial satellites. Some of them are,
- Weather forecasting,
- Transmission of television and radio signals,
- Telecommunication, and
- Remote sensing.
The process of collecting information about an object without making any physical contact with the object is known as remote sensing.
Remote sensing satellite
The world’s smallest satellite, Kalam Sat, was built by Rifath Sharook, a school student from Tamil Nadu. This \(64\ -gram\) satellite was launched into space on \(June\ 22,\ 2017\), by NASA.
Kalamsat Image credit: 8th TN Science Textbook Page no 87