Some Quasars Show Absorption Spectra with a Smaller Redshift Than

question 101

Multiple Choice

Some quasars show absorption spectra with a smaller redshift than their emission spectra;this indicates that:

• A)we still don't understand redshifts.
• B)they are much closer than previously thought.
• C)there is cooler gas between us and the quasar.
• D)their black holes are still contracting.
• E)their black holes are still expanding.

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Definitions:

Aggregation

The process of combining multiple pieces of data, information, or material to form a whole or summary.

Idiosyncrasies

Distinctive or peculiar features or characteristics of a person or thing, often related to behavior or habits.

Generalizable

The extent to which findings or conclusions from a study can be applied to wider populations, contexts, or circumstances.

Delay of Gratification

Delay of gratification is the ability to resist the temptation for an immediate reward and wait for a later reward.