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Satellite
What is a satellite?
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1 Reply
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A satellite is an object that orbits around a larger object, such as a planet or a star. Here are some key points about satellites:
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Satellites can be natural, like the Moon orbiting the Earth, or artificial, which are human-made objects launched into space.
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Artificial satellites are used for a variety of purposes, including:
- Communication – relaying signals for television, radio, and internet
- Navigation – providing location and timing information (e.g. GPS)
- Earth observation – monitoring the planet’s surface, atmosphere, and weather
- Scientific research – studying the Earth, other planets, and the universe
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Satellites are placed into different types of orbits around the Earth, such as low Earth orbit, medium Earth orbit, and geostationary orbit, depending on their purpose.
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Artificial satellites are launched into space using powerful rockets and are controlled remotely from ground stations on Earth.
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The first artificial satellite was Sputnik 1, launched by the Soviet Union in 1957, which kicked off the space age and the space race between the USSR and the United States.
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Today, there are thousands of active artificial satellites orbiting the Earth and providing a wide range of services and capabilities that are vital for modern society and technology.
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