The MOST Accurate Stellar Parallax Measurements for Distances to the Majority

question 253

Multiple Choice

The MOST accurate stellar parallax measurements for distances to the majority of stars in our neighborhood of the universe have been made by:

• A) the Hubble Space Telescope.
• B) Friedrich Wilhelm Bessel, in 1838; no measurements since then have matched the precision of his measurements.
• C) the Hipparcos satellite.
• D) the Very Long Baseline Array of radio telescopes.

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Definitions:

Hans Selye

A pioneering Hungarian-Canadian endocrinologist known for his research on stress and the development of the General Adaptation Syndrome model.

Reactions

the responses or behaviors that result from some sort of stimulus or change in the environment.

General Adaptation Syndrome

A theoretical model describing the body's short-term and long-term reactions to stress, comprising of three stages: alarm, resistance, and exhaustion.

Physiological Exhaustion

This refers to a state of extreme physical or mental fatigue usually resulting from prolonged stress or activity, leading to a diminished capacity for work or other activities.