Strong Evidence for the Existence of Planetary Systems in the Process

question 96

Multiple Choice

Strong evidence for the existence of planetary systems in the process of formation around other stars comes from:

• A) spectroscopic evidence of large quantities of molecules such as ammonia and methane, which can exist only in planetary atmospheres.
• B) photographs and infrared observations of disks of dust.
• C) detection of very regular pulses of radio energy from some stars.
• D) direct photography of actual planets near other stars.

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Definitions:

Distractibility

A common inability to maintain attention or focus on the task at hand due to being easily pulled away by other stimuli.

Generalized Anxiety Disorder

is a mental health disorder characterized by persistent and excessive worry about various aspects of life, not limited to one specific issue.

Constantly "On Edge"

This term describes a state of being continually anxious, tense, or irritable.

Apprehensive

Feeling anxious or fearful about the future; uneasy.