OneWeb's constellation of 700-plus satellites in low Earth orbit at 1,200 kilometers in altitude has the undeniable advantage of serving the entire planet and offering much lower latency -- the time it takes for a signal to travel between the customer and the satellite -- than any geostationary-orbit system. Operators of geostationary-orbit satellites retort that penguins and fish don't pay for broadband, and that low-orbit systems spend too much time flying over penguin-and-fish territory. ViaSat Inc. makes the same point, but the company has asked U.S. regulators to approva a 24-satellite . . .

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