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:

Rotokinetic Bed

A specialized medical bed designed to rotate the patient to prevent bedsores and aid in respiratory function, though specific details may vary as this term is not widely standardized.

Low-air-loss Bed

A specialized bed designed to reduce pressure on the skin by using air-filled sacs that can adjust to the patient's weight and movements, preventing pressure ulcers.

Rotation Mode

In mechanical and engineering contexts, the manner in which an object rotates or is made to rotate, which can include the direction, speed, and axis of rotation.

Seizure

A sudden, uncontrolled electrical disturbance in the brain that can cause changes in behavior, movements, feelings, and levels of consciousness.