Video narration
When you use your phone for maps, weather, or communication, are satellites all doing the same job? From the ground, they look similar, but a satellite's mission determines its equipment. A communication satellite relays signals between far-apart places, providing one route for television, phone calls, or internet. A navigation satellite sends precise timing signals. Your GPS receiver compares signals from several satellites to calculate your position. Weather satellites use sensors, tools that measure clouds, storms, and conditions around Earth. Earth-observation satellites use sensors too, collecting information about land, oceans, and changing environments. Then comes the orbit: it determines where the satellite can look, how long it stays over an area, or how well it connects distant places. There is no universal satellite. Each is a specialized space tool, with equipment and an orbit matched to its job. They work differently: each job gets its own tools and orbit.