Developed Calculus -
<u><em>Gottfried Wilhelm Leibniz
</em></u>
Around the 1670s, two great men — Sir Isaac Newton of England and Gottfried Wilhelm Leibniz of Germany — discovered and developed calculus independently from each other.
Who was the first to study the heavens through a telescope -
<u><em>Galileo Galilei
</em></u>
Galileo Galilei (1564-1642) was part of a small group of astronomers who turned telescopes towards the heavens.
Who developed a model of the universe with the Sun at the center
<u><em>Nicolai Copernicus
</em></u>
The Earth-centered Universe of Aristotle and Ptolemy held sway on Western thinking for almost 2000 years. Then, in the 16th century a "new" (but remember Aristarchus) idea was proposed by the Polish astronomer Nicolai Copernicus (1473-1543).
