The fundamental principle to understand about satellites is that they are projectiles. In other words, a satellite is an object whose only force is gravity. Once a satellite is launched into orbit, the only force governing its motion is gravity. Newton was the first to propose that a projectile launched quickly enough would orbit the Earth.
What is satellites ?
Any object that orbits the earth, sun, or other massive body is referred to as a satellite. Natural satellites and man-made satellites are the two types of satellites. Natural satellites include the moon, planets, and comets. Natural satellites are joined in orbit by a slew of satellites launched from Earth for communication, scientific research, weather forecasting, intelligence, and other purposes.
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