What Observational Fact Convinces Astronomers That the Source of Energy

question 86

Multiple Choice

What observational fact convinces astronomers that the source of energy in a typical quasar is physically very small?

• A) rapid variation in the energy output of the source
• B) extreme distance of all quasars
• C) starlike appearance of quasars in Earth's sky
• D) narrowness of the emission lines in the spectra of quasars

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Definitions:

Marijuana

A psychoactive drug from the Cannabis plant, used for medical or recreational purposes, often associated with altered mental states.

Context Attribute

A feature or characteristic of the environment or situation that influences the perception or behavior of an individual.

Old High School

An old high school typically refers to a previously operational institution providing secondary education that has been either closed, repurposed, or notably aged from its time of active use.

Interference

An inability to recall a specific memory due to the presence of other memories.