Sagittarius A*, the Radio Source Located at the Center of Our

question 42

Multiple Choice

Sagittarius A*, the radio source located at the center of our galaxy, is believed to be:

• A) a massive star cluster
• B) a supernova remnant
• C) a quasar
• D) a Seyfert nucleus
• E) a supermassive black hole

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Definitions:

Bright Light

High-intensity, visible light, often used in light therapy to treat various conditions, including seasonal affective disorder and certain sleep disorders.

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles.

Induce Sleepiness

The act of causing or facilitating the onset of a state of sleep, often through natural or pharmacological means.

Light Mask

A device often used in therapy to regulate sleep or treat certain mood disorders by emitting light patterns.