Observation and experiments
Nicolaus Copernicus published an early heliocentric model that involved perfect circles. The model challenged the traditional geocentric Ptolemaic system and the idea that the Earth is at the center of the universe. Copernicus' heliocentric system was published in his book, "On the Revolutions of Celestial Spheres".
Copernicus published this model after his death in 1543. The first publication was in a Polish language translation of the work by Rheticus in 1617.
<h3 /><h3>Why is it called a heliocentric model?</h3>
- A heliocentric model is a model of the solar system that places the Sun at its center.
- The term heliocentric comes from the Greek words helios (sun) and kentron (center).
- A heliocentric model can be contrasted with geocentric models, which place Earth at the center of the universe.
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The answer is D.
<span>The factor that contributed to the Hispanic community gaining additional civil rights is the growth in their population. The Hispanic community is having an additional power because they become more compared to what they used to be. They gain additional concrete voting number in many major places.</span>
The correct answer is C - glossary. The glossary gives definitions of important terms within a text.
What was the goal of the Dawes Act?
