Artificial Satellites

Key Notes:

What is an Artificial Satellite?

• An artificial satellite is a man-made object that is placed into orbit around the Earth or another planet.

Purpose of Satellites:

Satellites are used for many things, like:

• Sending TV and phone signals
• Weather forecasting
• GPS and navigation
• Scientific research
• Taking pictures of Earth and space

Examples of Artificial Satellites:

• INSAT (India)
• GSAT (India)
• Hubble Space Telescope (USA)
• International Space Station (ISS)

How are Satellites Launched?

• Satellites are sent into space using rockets.

Types of Artificial Satellites:

• Communication Satellites – Help in sending phone, internet, and TV signals.
• Weather Satellites – Help to predict the weather.
• Navigation Satellites – Help in GPS and location tracking.
• Scientific Satellites – Help scientists study space and Earth.

Orbit:

• Satellites move in a path around a planet. This path is called an orbit.

Difference Between Natural and Artificial Satellites:

• Natural Satellite: A satellite made by nature (like the Moon).
• Artificial Satellite: A satellite made by humans.