Question

Make a list of the uses of artificial satellites.

Answer 1

Hint: Artificial satellites are objects placed into the orbit of Earth or other planets by means of multi-stage rockets.

Complete Step by Step Answer:
Artificial satellites have various purposes some of which are:
1. Artificial satellites handle data and video transmission across countries and continents. SatPhones and phone calls also go through communication satellites.
2. They are used in the Global Positioning system (GPS). They help in navigation, connecting remote regions, vehicles to other parts of the world.
3. They are used to monitor Earth’s climate and forecast weather.
4. They are used to study planets, stars and observe distant Universe.
5. They are used to carry living organisms to space, generally for scientific experiments.
6. They are used by the military to gain information about the dangers and protect their borders. Killer satellites destroy enemy warheads and satellites.
7. Some satellites are used to collect energy from sunlight and transmit to Earth.
8. Spacecraft carrying humans to distant planets or moons are also satellites.
9. Some satellites are used to recover or repair other satellites.
10. They are capable of taking photos of the various parts of the surface of the planet in whose orbit it has been launched.

Additional information:
The first artificial satellite, Sputnik 1, was launched in 1957 by Soviet Union.
The first Indian satellite was launched in 1975, named Aryabhata.
Currently, an estimated 5000 satellites remain in orbit of which approximately 2000 are operational.

Note: Satellites are semi-independent computer-controlled systems. They remain in the orbit for their entire life span and eventually turn into space debris.