Suppose Astronomers Discover an Error in the Size of the Astronomical

question 47

Multiple Choice

Suppose astronomers discover an error in the size of the astronomical unit.How would this affect distances measured with Hubble's law?

• A) It would not affect such measurements, because they use galaxy redshifts.
• B) It would not affect such measurements, because calibration protects against such errors.
• C) Measurements with Hubble's law would change because of the change to inferred galaxy redshifts.
• D) Measurements with Hubble's law would change because of the calibration process.

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