Doppler Effect

In space and astronautical engineering, Doppler Effect refers to the change in frequency of electromagnetic waves or sound waves due to the relative motion between the source and the observer. This effect is commonly observed in space missions, where it is used to measure the velocity and distance of celestial bodies. For instance, the Doppler Effect is used in radar systems to determine the velocity and position of spacecraft, planets, and asteroids. In addition, the Doppler Effect is used in remote sensing to measure the speed and direction of winds and ocean currents. The Doppler Effect is also used in astronomy to study the motion of stars and galaxies, and to detect exoplanets by measuring the wobble of their host stars caused by the gravitational pull of the planets.
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