Category Archives: Historical

Copernicus in Context

Nicolaus Copernicus was born on February 19, 1473 and died on May 24, 1543. Throughout Copernicus’ life, many key historical events took place that altered the state of knowledge and culture at the time. In 1517, Martin Luther posted his 95 Theses on the door of the Castle Church in Germany. His writing criticized the […] Continue reading

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Historical Astronomers in Context

Nicholas Copernicus was an essential figure to the astronomy world because he suggested the concept of the heliocentric model of the solar system. Unlike previous astronomers who believed that planets revolve around Earth, Copernicus postulated that the Sun is at the center of the Solar System and that all the planets, including Earth, revolved about […] Continue reading

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Historical astronomers in context

Johannes Kepler: December 27, 1571- November 15, 1630. Kepler was important to astronomy because he developed three laws of planetary motion. He determined that 1) planets orbit the sun on an ellipse, 2) in an orbit equal areas are swept out in equal times with planets moving faster the closer they get to a gravitational […] Continue reading

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Historical Astronomers in Context

Isaac Newton Isaac Newton’s major life work was his book Principia Mathematica where he detailed his three laws of motion, gravitational law and other astronomical phenomena. He also created Calculus independently of Leibniz. Using his law of gravity, he derived Kepler’s three laws of planetary motion. Historical Events and Figure Scientific Revolution: The Scientific Revolution […] Continue reading

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Historical Astronomers in Context

Johannes Kepler “The diversity of the phenomena of Nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment”-Kepler HISTORICAL ASTRONOMER One of the most fascinating and revolutionary astronomers in history was Johannes Kepler. He was born in Weil […] Continue reading

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Historical Astronomers in Context

Nicolaus Copernicus  —  Born February 19, 1473 | Died May 24, 1543 Copernicus was important to astronomy because he proposed the heliocentric system that explained how planets orbit around the Sun. His central idea was that Earth, in addition to orbiting the sun every year, rotates once daily on its own axis. The slow changes […] Continue reading

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The Universe Isn’t Kepler-centric!

Johannes Kepler made three of the most influential discoveries to the field of astronomy, also known as Kepler’s Laws. Kepler was born on December 27, 1571 (a true Capricorn!), and died on November 15, 1630. In case you forgot: Kepler’s 1st Law: planet orbits are elliptical (not necessarily perfect circles!) and the Sun is at […] Continue reading

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Historical Astronomers in Context

Johannes Kepler (1571- 1630) Johannes Kepler was an important contributor to astronomy after he created the three laws of planetary motion. The first law states that planets move in elliptical orbits around the sun, and the second law states that planets move faster in their orbits when closer to the sun. Lastly, the third law […] Continue reading

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blog 2: Gravity over time

Isaac Newton originally conceptualized gravity as a mutually attractive force between all objects with mass. Those who came before him, such as Galileo, had performed experiments and attempted to establish increasingly robust understandings of this force, but none quite unified the idea like Newton. The story goes that Newton saw an apple fall from a […] Continue reading

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Newton in Context

The five most important astronomical pioneers which we are studying in this course are Nicholas Copernicus (February 19, 1473 to May 24, 1543), Galileo Galilei (February 15, 1564 to January 8, 1642), Johannes Kepler (December 27, 1571 to November 15, 1630), Isaac Newton (December 25, 1642 to March 20, 1727) and Tycho Brahe (December 14, […] Continue reading

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