Astronomers Detect the Slight Anisotropy in the Cosmic Microwave Background

question 165

Multiple Choice

Astronomers detect the slight anisotropy in the cosmic microwave background by making redshift measurements: wavelengths coming from the direction of Aquarius are slightly longer and those from the direction of Leo are slightly shorter. This redshift is a

• A) Doppler shift.
• B) gravitational redshift.
• C) cosmological redshift.
• D) Doppler shift, gravitational redshift, or cosmological redshift since all three are one and the same thing.

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Definitions:

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Numbers or quantities that can be multiplied together to produce another number, often used in breaking down numbers into their elemental parts.

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