If the Hipparcos Satellite Measures the Parallax Motion of a Star

question 130

Multiple Choice

If the Hipparcos satellite measures the parallax motion of a star against the background stars and concludes that the star has a parallax of 0.004 arcsec,how far is the star from Earth?

• A) 25 pc, or 81.5 ly
• B) 250 pc, or 815 ly
• C) 400 pc, or 1300 ly
• D) 0.004 pc, or 0.013 ly

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Definitions:

Blackacre

A fictional name often used in legal documents or discussions to represent a hypothetical piece of real property.

Specific Performance

A legal remedy requiring a party to execute a contract according to its precise terms, typically applied in cases involving unique goods or property.

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Monetary compensation awarded to reimburse a plaintiff for actual losses suffered due to a defendant's wrongdoing.

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Financial compensation awarded to a plaintiff to punish the defendant for egregious misconduct and deter future similar acts.