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Orbiting 35,786 kilometres above the equator allows satellites to match Earth's rotational speed. The figure is taken from NASA History, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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Arthur C. Clarke conceptualized geostationary communications satellites in 1945

Orbiting 35,786 kilometres above the equator allows satellites to match Earth's rotational speed

Science fiction writer and inventor Arthur C. Clarke published a paper in Wireless World in 1945 proposing telecommunication relays in geostationary orbit. At an altitude of 35,786 kilometres above Earth's equator, a satellite's orbital period exactly matches planetary rotation. Ground antennas can remain pointed at a fixed position in the sky.

Where this comes from

NASA History

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Tags: satellites, telecoms, orbit

Arthur C. Clarke conceptualized geostationary communications satellites in 1945: the short answers

Where does this come from, and can I check it?: Orbiting 35,786 kilometres above the equator allows satellites to match Earth's rotational speed. The figure is taken from NASA History, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.