Which of the following statements about parallax is not true?
A)You can demonstrate parallax simply by holding up a finger and looking at it alternately from your left and right eyes.
B)The existence of stellar parallax is direct proof that Earth orbits the Sun.
C)Measurement of stellar parallax allows us to determine distances to nearby stars.
D)The technique of stellar parallax was used by Hubble to determine that the Andromeda Galaxy (M 31)is about 2 million light-years away.
E)Ancient astronomers were unable to measure parallax and used the absence of observed parallax as an argument in favor of an Earth-centered universe.

Question

Quizplus · Accepted Answer

All of the other statements about parallax are true. However, Hubble did not use the technique of stellar parallax to determine the distance to the Andromeda Galaxy. Instead, he used observations of Cepheid variables to calculate its distance.

Which of the Following Statements About Parallax Is Not True