What is a satellite ?
A satellite is a moon, planet or machine that orbits a planet or star. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.
What are they used for ?
GPS (Global Positioning System)
A group of more than 20 satellites make up the GPS which can figure out our precise location wherever we are on the planet (if we have a GPS receiver). It allows us to find accurate direction to locations we want to go and minimize chances of getting lost.
Worldwide Communication Broadcasting Technology
Satellites are used in beaming TV signals and phone calls around the world. Satellite communication allows people to connect with each other across the world through text, instant messaging, phone calls and video calls.Weather Forecast
Satellites provide information about clouds, oceans, lands, and ice. They also measure gases in the atmosphere as well as the amount of energy the earth absorbs or emits. These entire data help meteorologist to predict upcoming weather conditions whether it is a storm or a hurricane.Scientific Study and Research
Satellites carry cameras and scientific sensors. These instruments point toward Earth to gather information about its land, air and water as well as face toward space to collect data from the solar system and the universe.What more ?
Parts Of A Satellite :
- An antenna – used to send and receive information.
- A power source (Solar panel or battery)
Satellites have contributed to human welfare by improving communications, preventing disasters, saving lives and making life better. They have changed the way we understand the universe allowing us to study and learn more about the universe and our future.
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