During the Eighteenth and Nineteenth Centuries, Attempts to Precisely Measure

question 87

Multiple Choice

During the eighteenth and nineteenth centuries, attempts to precisely measure theastronomical unit relied largely on rare:

• A)total solar eclipses.
• B)transits of the inferior planets across the Sun.
• C)passages of comets close to the Earth.
• D)maximum elongations of Venus.
• E)oppositions of Mars.

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