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A satellite is an object that revolves around another object. In space, satellites may be natural, like our moon, or planets like mars. If a satellite is man-made, then it was built on earth and then launched into space. Weather satellites are an example of a man-made satellite. Man-made satellites that send back pictures and useful scientific information have explored many of our planets in our solar system. For more information about satellites check out https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-satellite-k4.html