Astronomers can estimate distances to the galaxies in the figure below because of
A) the expansion of the universe.
B) our location at the center of the universe.
C) dark matter.
D) peculiar velocities.
E) gravitational redshift.

Question

Astronomers can estimate distances to the galaxies in the figure below because of 
A) the expansion of the universe. 
B) our location at the center of the universe. 
C) dark matter. 
D) peculiar velocities. 
E) gravitational redshift.

Quizplus · Accepted Answer

The Answer of Astronomers can estimate distances to the galaxies in the figure below because of 
A) the expansion of the universe. 
B) our location at the center of the universe. 
C) dark matter. 
D) peculiar velocities. 
E) gravitational redshift.

Astronomers Can Estimate Distances to the Galaxies in the Figure