What physical phenomenon is the radial velocity detection technique fundamentally based upon?

Answer

The Doppler effect.

The method relies on the Doppler effect, where the light waves emitted by a moving source shift in wavelength depending on whether the source is approaching or receding from the observer.

What physical phenomenon is the radial velocity detection technique fundamentally based upon?

#Videos

Detecting Exoplanets: Radial Velocity Method - YouTube

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