The Spectra of Most Galaxies Show Redshifts

question 66

Multiple Choice

The spectra of most galaxies show redshifts.This means that their spectral lines

• A)always are in the red part of the visible spectrum.
• B)have wavelengths that are longer than normal.
• C)have wavelengths that are shorter than normal.
• D)have a higher intensity in the red part of the spectrum.
• E)have normal wavelengths,but absorption of light makes them appear red.

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