How Do Astronomers Create Three-Dimensional Maps of the Universe

question 5

Multiple Choice

How do astronomers create three-dimensional maps of the universe?

• A)through comparison of computer models of the structure formation with observations
• B)by using the position on the sky and the redshift to determine a distance along the line of sight
• C)by using the position on the sky and the galaxy brightness as a measure of distance along the line of sight
• D)by interpreting the peculiar velocities of each galaxy
• E)by carefully measuring the parallax of each galaxy