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

The technique of stellar parallax was not used by Hubble to determine the distance to the Andromeda Galaxy. Hubble used Cepheid variable stars to measure the distance, establishing that Andromeda was far outside the Milky Way and not a nebula within our galaxy.

Which of the Following Statements About Parallax Is Not True