What Observation in Astronomy, Made AFTER the Discovery of Quasars

question 11

Multiple Choice

What observation in astronomy, made AFTER the discovery of quasars, was a big help to astronomers in figuring out what quasars really were?

• A) the understanding that most stars become white dwarfs when they die and white dwarfs are much smaller than main-sequence stars
• B) the discovery that the Milky Way Galaxy has a black hole at the center with enough mass for 4 million Suns
• C) the discovery that the galaxies mostly show a red shift
• D) the discovery of exoplanets (planets orbiting other stars) throughout the Galaxy
• E) the discovery of Herbig-Haro objects around newly forming stars

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Definitions:

Parallel Circuit

An electrical circuit in which the components are connected in parallel, providing multiple paths for the current.

Phase Angle

A measurement, often in degrees or radians, indicating the difference in phase between two waveforms.

Parallel Circuit

An electrical circuit configuration where components are connected alongside each other, leading to the same voltage across all components but different current through each.

Inductive Reactance

The opposition that inductors present to current change in AC circuits, measured in Ohms.