A satellite is an object that revolves around another object in space. These objects can be categorized into two main types: natural and man-made satellites. Natural satellites, such as the Earth and the Moon, exist in our solar system. For instance, the Earth orbits around the Sun while the Moon orbits around the Earth. These celestial bodies are held in their orbits by gravitational forces.
On the other hand, man-made satellites are artificial objects placed into orbit around the Earth or other celestial bodies. These satellites serve various purposes, including communication, weather observation, navigation, and scientific research. They are typically launched into space by rockets and can range in size from small devices to large structures. NASA, the United States’ space agency, plays a significant role in the development and deployment of satellites for scientific exploration and technological advancement.
In conclusion, satellites play a crucial role in our understanding of space and in various aspects of modern life. They come in two main categories: natural and man-made, each serving distinct purposes. Whether observing distant galaxies or facilitating global communication, satellites continue to push the boundaries of human knowledge and technological capabilities.
(Response: NASA defines a satellite as an object that revolves around another body in space. Satellites can be natural, like the Earth and the Moon, or man-made, serving various purposes such as communication and scientific research.)