Physics for IGCSE & O level - The Earth In Space (Section 5 - No. 39)
What is the significance of the Doppler effect in astronomy?
It helps to explain the changing color of stars.
It helps to determine the speed and direction of celestial objects.
It aids in measuring the temperature of galaxies.
It enables the observation of the formation of planets.
Explanation
Doppler effect describes relative motion.
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