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.

Question

Quizplus · Accepted Answer

Hubble's law relies on the calibration of distances, which would be affected by a change in the astronomical unit, altering the inferred distances.

Suppose Astronomers Discover an Error in the Size of the Astronomical