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Assessment
What is the main idea of the heliocentric theory?
The Earth revolves around the Sun.
The Sun revolves around the Earth.
All planets orbit the Moon.
The Sun is static and does not move.
Who is credited with formulating the heliocentric theory?
Isaac Newton
Ptolemy
Nicolaus Copernicus
Galileo Galilei
In what century did Copernicus publish his work on the heliocentric theory?
15th century
16th century
17th century
18th century
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