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Light from some stars shows an apparent change in frequency because of ______?

Light from some stars shows an apparent change in frequency because of ______?

کچھ ستاروں سے روشنی ______ کی وجہ سے تعدد میں واضح تبدیلی ظاہر کرتی ہے؟
Explanation
  • The apparent change in frequency of light from stars is due to the Doppler effect.
  • It is caused by their motion relative to Earth.
  • If a star moves toward us, its light shifts to blue (higher frequency), and if it moves away, it shifts to red (lower frequency).