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3. What are satellites? Which is the natural satellite of the earth?
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In the context of spaceflight, a satellite is an object that has been intentionally placed into orbit. These objects are called artificial satellites to distinguish them from natural satellites such as Earth's Moon. On 4 October 1957 the Soviet Union launched the world's first artificial satellite, Sputnik 1
The Moon is Earth's only proper natural satellite. At one-quarter the diameter of Earth, it is the largest natural satellite in the Solar System relative to the size of its planet, and the fifth largest satellite in the Solar System overall.
Distance to Earth: 384,400 km
Gravity: 1.62 m/s²
Radius: 1,737.1 km
Age: 4.53 billion years
Orbital period: 27 days
Orbits: Earth
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A satellite is a moon, planet or machine that orbits a planet or star.Satellite cane be Natural or artificial (made by people).Moon is the Natural Satellite Of the Earth.
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