The Instrument Astronomers Are Now Using to Make the Most

question 23

Multiple Choice

The instrument astronomers are now using to make the most precise measurements of stellar parallax we have ever had is

• A) the 5-meter (Hale) reflector on Mt. Palomar
• B) the Very Large Array of radio telescopes
• C) the Compton Gamma Ray Observatory
• D) the Gaia satellite in space
• E) a swimming-pool sized vat of cleaning fluid deep in the shaft of a gold mine

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Definitions:

Behaviors

Observable actions or responses of individuals or groups in response to external or internal stimuli, often studied in psychology to understand and predict human actions.

Volunteers

Individuals who offer themselves for a service or undertaking willingly and without pay.

Association

A connection or relationship between two or more concepts, objects, or variables, where one may influence or be linked to another.

Situationist Argument

A perspective in social psychology that suggests human behavior is largely influenced by situational factors and the immediate environment rather than by personal traits or motivations.