This is as a result of it revolves around the Earth at Earth’s personal angular velocity . A low Earth orbit usually is a circular orbit about a hundred and sixty to 2,000 kilometres above the earth’s surface and, correspondingly, a interval of about ninety minutes. NASA’s satellite functions program launched the primary artificial satellite used for passive relay communications in Echo 1 on 12 August 1960. Echo 1 was a aluminized balloon satellite appearing as a passive reflector of microwave indicators. Communication signals were bounced off the satellite tv for pc from one level on Earth to a different.
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