The Majority of the Redshift That We Measure from the Most

question 23

Multiple Choice

The majority of the redshift that we measure from the most distant galaxies is due to

• A) excess hydrogen emission.
• B) most of these galaxies being old, elliptical-type galaxies.
• C) the expansion of the universe "stretching" the wavelengths of photons.
• D) the cosmic microwave background.
• E) the actual velocity of that galaxy.

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