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The Hipparcos satellite has extended our accurate parallax distance measurements to over 200 parsecs.
Cardboard Core
The inner cylindrical component made of cardboard around which materials such as paper, tape, or fabric are wound.
Sherman Antitrust Act
A landmark federal statute in the United States passed in 1890 that prohibits monopolistic practices and promotes competition.
Prohibits Monopolies
Refers to laws or regulations designed to prevent the control of a market by a single entity, ensuring competition.
Free Market
An economic system where prices are determined by unrestricted competition between privately owned businesses without government intervention.
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