Suppose a human-made satellite in outer space detects light with wavelength λ coming from the surface of a distant planet with mass M and radius R. What is the wavelength of the light as measured by a device on the planet’s surface? Suppose both the device and the satellite are at rest with respect to the planet

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[Spacetime and General Relativity]

Suppose a human-made satellite in outer space detects light with wavelength λ coming from the surface of a distant planet with mass M and radius R. What is the wavelength of the light as measured by a device on the planet’s surface? Suppose both the device and the satellite are at rest with respect to the planet.

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