@kluzvybxzn918: Redshift or Doppler Effect 🧐 As the universe expands, the wavelengths of light stretch with it. And the longer the wavelength, the redder it is. As an object gets further away, the light stretches more and more, and when it reaches us, it changes into a different spectrum.

Michael_Young

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Sunday 16 November 2025 12:22:15 GMT