How Do Astronomers Create Three-Dimensional Maps of the Universe

question 90

Multiple Choice

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

• A) Through the comparison of computer models of galaxy formation with observations
• B) By using a galaxy's position on the sky and its redshift to determine its distance along the line of sight
• C) by using a galaxy's position on the sky and its 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

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