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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Definitions:

Bond Redemption

The process of repaying the face value of a bond upon its maturity, thereby fulfilling the issuer's obligations to the bondholders.

Carrying Value

The book value of assets and liabilities on the balance sheet, calculated as the original cost minus any depreciation, amortization, or impairment costs.

Retired

Often refers to the status of an asset that has been taken out of use and is no longer productive.

Interest Rate

The percentage of a loan that a borrower must pay as interest, usually shown as an annual rate based on the outstanding loan amount.