Edwin Hubble and Milton Humason discovered that there was a linear relationship between a galaxy's ____.
A) rotation curve and distance
B) mass and luminosity
C) age and distance
D) apparent recession velocity and distance
E) mass and recession velocity

Question

Quizplus · Accepted Answer

Edwin Hubble and Milton Humason discovered that there was a linear relationship between a galaxy's apparent recession velocity and its distance, which is the basis for Hubble's Law. This discovery provided strong evidence for the expansion of the universe.

Edwin Hubble and Milton Humason Discovered That There Was a Linear