Historical Astronomers in Context

Galileo Galilei made many important contributions to astronomy during his lifetime. He created his own increasingly powerful telescopes. He discovered that the Moon’s surface wasn’t smooth, as it had been previously thought. He observed four moons revolving around Jupiter. He discovered many more stars with his telescopic observations. He found that Venus has phases just like the Moon. He determined that the Sun has sunspots. Galileo’s observations were extremely significant evidence in favor of the Copernican theory, undermining the geocentric model of the universe, and he held the idea that the Earth revolves around the Sun long before it became accepted among the scientific community.

Galileo Info

            During Galileo’s lifetime, on July 25, 1593, King Henry IV of France converted from Protestantism to Roman Catholicism. This was important because King Henry IV was viewed extremely unfavorably by Protestants afterward, and he would eventually declare Catholicism as the state religion. A little later in Galileo’s lifetime, on December 21, 1620, the Pilgrims on the Mayflower arrived in America, founding the Plymouth colony in Massachusetts. There they began building their town, with the community government to operate under the signed agreement known as the Mayflower Compact. William Shakespeare was born on April 26, 1564 and died on April 23, 1616, meaning that William Shakespeare lived at the same time as Galileo for Shakespeare’s entire life. Shakespeare was a critical figure in literature because he garnered success and acclaim for the plays he wrote, and his plays are still studied and performed to this day – over four centuries later.

16th/17th Century Events

King Henry IV

The Pilgrims

Shakespeare Biography

            It was interesting to learn about the importance of King Henry IV converting to Roman Catholicism because it reminded me how intertwined politics and religion were back then. Additionally, it reminded me that Galileo’s observations must have been especially unpopular due to their conflicts with the beliefs within the church. While Galileo was making scientific contributions in Italy, America was just getting started, with the Pilgrims getting settled in Plymouth. This made me think about how relatively quickly America emerged as a world power compared to other developed countries that had existed well before America had even been discovered. It was definitely interesting to learn that one of the most important figures in scientific history existed at the same time as one of the most important figures in literary history, and finding out that both only became as popular of figures as they are long after their deaths made me realize how common of a theme this is for geniuses throughout history.

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Historical Figures in Context

Galileo Galilei (2/15/1564-1/8/1642) not only made numerous important discoveries, including Jupiter’s moons information about sunspots, and gravitational physics, but also was a champion of scientific truth in a time of a tyrannical and ignorant Church. Galileo was a proponent and improver of the Copernican (or heliocentric) solar system model and fought hard to have the public convinced that the Church’s geocentric model was wrong and outdated. Unfortunately, he was put on trial for heresy and was confined to house arrest for his efforts. He continued to study and write about physics until his death.

In 1606, Jamestown, VA was established as the first official British Colony on the American mainland. This opened the door for continuous British colonization along the east coast and for the establishment of the original American colonies (which would obviously later become the USA). Jamestown was also a huge boon for cross-continental trade for the British, or Europe in general, and the new world.

The Thirty Years War was started in 1618 as a response to the tyrannical iron fist of the Catholic Church. The war involved all of the major powers in Europe and redrew the political and religious landscape of Europe thereafter.

William Shakespeare (1564-1616) was an English poet and playwright who wrote dozens of works that are now cemented in literary and theatrical history. He is known as the father of modern theatre and is credited with his own subgenre of the field.

Learning about the past is the best way to understand the present or to predict the future. Human behavior, on a macro scale, is mostly similar and predictable across generations and cultures. For example, Galileo’s scientific struggles against religious fundamentalism are problems that are still prevalent 400 years later. Shakespeare’s contributions to theater are still being praised and are still the basis for much of contemporary education in the arts. Without the past, there is no precedent or ethos to a given future action, and it is always a treat to delve into.

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Historical Astronomers in Context

Nicolaus-Copernicus-biographybd.jpg
Nicholas Copernicus, Biographybd

Nicholas Copernicus, the father of modern astronomy, was born on February 19, 1473 in Toruń, Poland. As the son of a wealthy merchant, he had considerable freedom to explore and research anything he wanted. Initially, he had chosen to attend the University of Bologna where he studied medicine and law. While there, however, he stayed with a mathematics professor who urged him to question current astronomical practices, which is what sparked his interest in astronomy. He then attended the University of Krakow and obtained degrees in math and astronomy. At the time, the Ptolemaic model of the universe, despite its inaccuracy and complexity, was most widely used and accepted. It did not explain the retrograde motion of the planets, which contributed to the inaccuracy of the model. Copernicus then developed a heliocentric model of the universe in response, in this model everything in the universe revolved around the sun in perfect circles, and the stars were in fixed positions in the universe.

cosmologies_copernican
Copernicus’ Model of the Universe,Physics of the Universe

The problem was, however, that it still was fairly inaccurate- so Copernicus put circles on top of the circles to “fix” this problem. Copernicus’ model of the universe was ultimately just as complex and no more accurate in predicting the motion of the planets than the Ptolemaic model, so very few people converted to this model. However, he did lay the foundation for later astronomers to develop a more accurate heliocentric model. Nicholas Copernicus died on May 21, 1573.

Copernicus was not the only revolutionary of his time, however -there were other significant events and figures during this time period. As the rhyme goes “Columbus sailed the ocean blue 1492”, which was when Copernicus was roughly 19 years old. This was very significant in nature for a lot of reasons. First, it was the “discovery” of a new land filled with resources and places for many Europeans to call home. Secondly, it changed the whole political climate in Europe, giving rise to the massively wealthy Spanish Empire. Another significant event during Copernicus’ life was the nailing of the Martin Luther’s 95 Theses. This eventually would be the foundation of the Protestant Reformation and the idea that salvation could only be achieved through faith, and was not solely based on the deeds of a person. Another important historical figure during this period was Mary, Queen of Scots. Mary, Queen of Scots (December 8, 1542 – February 8, 1587) claimed the throne to 4 nations, and was well loved across all of the lands, but she was also viewed as a threat by many other monarchs (including her cousin Elizabeth I, the Queen of England). She lacked the political skills to run a country, let alone 4. So needless to say, she got into some political trouble and fled to England to seek refuge from her cousin, but instead she was greeted with 19 years of imprisonment.

 

mary-queen-of-scots-1
Mary Queen of Scots,The Famous People

In summation, this time period was a period of political turmoil, religious revolutions, and scientific breakthroughs. I think we all forget just how close these historic events were to each other, and how multiple things can be happening across the world at the same time. Like even though it makes sense now that I think about the dates, I would have never imagined that Copernicus and Columbus even existed at the same, much less make their discoveries at the same time. Similarly, one of my all-time favorite TV-shows is Reign, which follows the story of Mary, Queen of Scots throughout her life as a young adult, and it was a bit baffling to me that Copernicus was building his heliocentric model around the same time Mary was imprisoned. This assignment really helped put things into perspective for me, time-wise.

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Historical Astronomers in Context

Johannes Kepler

December 27th, 1571 – November 15th, 1630

JohannesKepler-300x412

Image Source: High Altitude Observatory

Kepler was a German astronomer and mathematician whose greatest contribution to the field of astronomy were his three planetary laws of motion. Using mathematical calculations, he discovered orbits are ellipses and that within such orbits, equal areas are swept out within an orbit in equal times. He also found the mathematical relationship between distance from the Sun and time to orbit. These laws helped confirm Copernicus’ heliocentric theory and set the foundations for the future discoveries from astronomers such as Newton and Galileo. He also made advancements with the newly invented telescope.

Contemporary Events:

1577 – Elizabeth I sent Francis Drake on an expedition against the Spanish, in which he became the second person, and first captain, to circumnavigate the globe.

1582 – Pope Gregory XIII introduced the Gregorian calendar for the first time. While initially only adopted by Catholic countries, today the Gregorian calendar is still the most widely used civil calendar today.

Contemporary Person:

William Shakespeare (~26th April, 1564 – 23rd April, 1616)

Shakespeare was an English poet and screenwriter, known by many as the greatest dramatist of all time. He wrote numerous famous plays including Romeo & Juliet, Macbeth, King Lear, and many more.

Reflection:

When we learn about different topics that occurred in the past, such as history, sport, science, literature, astronomy etc., it’s often hard to imagine the large picture of society at these occurrences. When learning about famous writers from a specific period of history, we tend to only be learning about the writers, and the same goes for learning about past astronomers or athletes. It’s rare in which we’re given an overview of all the figures during a time that are all influencing society within their own areas of expertise. Putting figures into context creates a more complete image of the experiences such people are going through. The idea of science being influenced by the discoveries made by Kepler, while literate is, at the same time, being changed forever by the work of Shakespeare, creates a more vivid picture of life at that time.

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Historical Astronomers in Context

  1. Johannes Kepler was born on Dec. 27, 1571 and died on May 21, 1630. He was important to astronomy because he made 3 key astronomical discoveries. First, and arguably most importantly, he discovered that planetary orbits are ellipses and not perfect circles as is it was popularly believed to be at the time. This was also significant because Kepler decided to abandon his personal preconceived beliefs in favor of the data that supported an alternate theory. Kepler was also able to summarize his discoveries into 3 laws which are very important to understanding planetary motion. His first law is that planets orbit the sun in an ellipse. His second law is that planets cover equal distances in equal times and therefore as planets move farther away from they move more slowly and they move more quickly as they get closer to the sun. His third law was a formula (p^2=a^3) which supports the idea that more distant planets orbit the sun more slowly.

 

2. a. During Kepler’s lifetime, there was a witchcraft scare in which many women were accused of being witches. Throughout Europe, tens of thousands of women were executed due to suspicion of witchcraft. Also during Kepler’s lifetime, the European countries’ colonization on a global scale became very prevalent. Britain colonized America and India, France colonized Quebec, and the Dutch colonized present day New York.

b. WilliamShakespeare was alive during Kepler’s lifetime. He lived from April 26, 1564 to April 23, 1616. He wrote wrote poems and many plays that are still wildly popular and  to this day. His plays were mostly tragedies and evoked a strong response from his audience.

 

3. After researching events and people that were around during Kepler’s lifetime, I realize that Kepler lived in an incredibly busy time with many significant people and events. Most importantly, I believe that growing up in a time in which the church was so powerful (as can be seen by the witchcraft scare) could have played a role in Kepler’s discoveries. Kepler would have needed to be brave in his pursuit of the truth because the church tended to persecute those who did not agree with them. In Kepler’s case, he supported findings that argued for a heliocentric model of the solar system instead of the geometric one that the church believed in.

 

 

Sources:

Barnett, Raymond A. Cosmic Perspective / The Solar Sytem. 8th ed., Benjamin-Cummings, 2016.

Bevington, David, et al. “William Shakespeare.” Encyclopædia Britannica, Encyclopædia Britannica, inc., 27 Dec. 2017, http://www.britannica.com/biography/William-Shakespeare.

“Colonial Settlement – American Memory Timeline- Classroom Presentation | Teacher Resources.” Library of Congress, N.p., http://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/timeline/colonial/.

Eggen, Olin Jeuck. “Tycho Brahe.” Encyclopædia Britannica, Encyclopædia Britannica, inc., 11 May 2017, http://www.britannica.com/biography/Tycho-Brahe-Danish-astronomer.

Gould, Alan. “Johannes Kepler: His Life, His Laws and Times.” NASA, NASA, 24 Sept. 2016, http://www.nasa.gov/kepler/education/johannes.

Helden, Albert Van. “Galileo.” Encyclopædia Britannica, Encyclopædia Britannica, inc., 17 Jan. 2018, http://www.britannica.com/biography/Galileo-Galilei.

Westfall, Richard S. “Sir Isaac Newton.” Encyclopædia Britannica, Encyclopædia Britannica, inc., 18 Dec. 2017, http://www.britannica.com/biography/Isaac-Newton.

Westman, Robert S. “Nicolaus Copernicus.” Encyclopædia Britannica, Encyclopædia Britannica, inc., 14 Nov. 2017, http://www.britannica.com/biography/Nicolaus-Copernicus.

Z., Grace. “Witchcraft – The Beginnings.” Witchcraft: The Beginnings, N.p., people.ucls.uchicago.edu/~snekros/The%20Salem%20Sentinel/Other/Entries/2013/11/14_Witchcraft_-_The_Beginnings.html.

 

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Historical Astronomers in Context

  1. Johannes Kepler was born on Dec. 27, 1571 and died on May 21, 1630. He was important to astronomy because he made 3 key astronomical discoveries. First, and arguably most importantly, he discovered that planetary orbits are ellipses and not perfect circles as is it was popularly believed to be at the time. This was also significant because Kepler decided to abandon his personal preconceived beliefs in favor of the data that supported an alternate theory. Kepler was also able to summarize his discoveries into 3 laws which are very important to understanding planetary motion. His first law is that planets orbit the sun in an ellipse. His second law is that planets cover equal distances in equal times and therefore as planets move farther away from they move more slowly and they move more quickly as they get closer to the sun. His third law was a formula (p^2=a^3) which supports the idea that more distant planets orbit the sun more slowly.

 

2. a. During Kepler’s lifetime, there was a witchcraft scare in which many women were accused of being witches. Throughout Europe, tens of thousands of women were executed due to suspicion of witchcraft. Also during Kepler’s lifetime, the European countries’ colonization on a global scale became very prevalent. Britain colonized America and India, France colonized Quebec, and the Dutch colonized present day New York.

b. WilliamShakespeare was alive during Kepler’s lifetime. He lived from April 26, 1564 to April 23, 1616. He wrote wrote poems and many plays that are still wildly popular and  to this day. His plays were mostly tragedies and evoked a strong response from his audience.

 

3. After researching events and people that were around during Kepler’s lifetime, I realize that Kepler lived in an incredibly busy time with many significant people and events. Most importantly, I believe that growing up in a time in which the church was so powerful (as can be seen by the witchcraft scare) could have played a role in Kepler’s discoveries. Kepler would have needed to be brave in his pursuit of the truth because the church tended to persecute those who did not agree with them. In Kepler’s case, he supported findings that argued for a heliocentric model of the solar system instead of the geometric one that the church believed in.

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A Short Reflection on Nicolaus Copernicus and some Events during his Life

Nikolaus_Kopernikus
Mikołaj Kopernik, Wikipedia

Few individuals hold such prominence in historical Astronomy as Nicolaus Copernicus, the father of the so-called Copernican Revolution. He lived from 1473 to 1543 and started the shift which led to the jettisoning of the geocentric model of the solar system in favor of the (correct) heliocentric model. Copernicus thus followed in the footsteps of the ancient Greek astronomer Aristarchus, who the Greeks unfortunately did not listen to (Here is a great source on Copernicus!). During Copernicus’ life, Christopher Columbus paved the way for even more understanding about our planet by inadvertently discovering the Americas in 1492. Only a few decades later in 1529, the Ottoman Empire’s conquest of Europe was halted at Vienna, which ensured that the future advances in astronomy would have to deal with Christian religious authorities (which often didn’t work out very well) and not Muslim authorities. During all of this, William Tyndale (1494-1536) translated the Bible into English, paving the way for the Church of England to later separate from the Catholic Church which set the stage for Britain’s future religious conflict with their colonialist competitors from Spain and France.

Paying close attention to the dates in which Copernicus lived and subsequently connecting the dots to how his life overlapped with other influential figures and events of the past puts it all into perspective. As we can see, while Copernicus was discovering that the sun was the center of the solar system and thereby changed the accepted view of the earth in relation to the universe, Columbus found a New World and changed the common understanding of the earth itself. People like Tyndale and events like the Siege of Vienna also greatly affected the future of Europe and thus its astronomers, ensuring Christian rule across most of the continent even as Christians turned against each other with the Protestant Reformation. It’s easy when looking at history to miss how consequential lives and events often overlap!

 

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Historical Astronomers in Context

Nicolaus Copernicus (February 19, 1473 to May 24, 1543):

Copernicus developed the concept of a heliocentric solar system, publishing his work in Commentariolus and De revolutionibus orbium coelestium (part of which was written by Osiander). He built his own observatory and was often criticized by the Roman Catholic Church for his “unconventional” theories.

Historical Events:

In 1527, the Holy Roman Empire invades Rome and imprisons Pope Clement VII; this marked the end of the Italian Renaissance. In 1535, Henry VIII responds to his excommunication by appointing himself as head of the English Church; this marks the beginning of the reformation.

Historical Figure:

Leonardo da Vinci (April 15, 1452 to May 2, 1519) was an Italian painter, sculptor and engineer widely known as a Renaissance humanist. His work, namely the Last Supper and the Mona Lisa is among the most influential of Renaissance artwork.

Reflection:

I think it’s particularly interesting how much of an influence the Church had on innovation and the creation of new theories. The 1400-1700s was a time of extreme scientific inquiry and inventiveness that I feel was hindered by social, political and religious factors. One would think that the large overlap in life for many of these astronomers would have led to the creation of more theories (or that they’d at least be communicating more often), but communication was surely limited (or maybe not allowed in some cases).

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Historical Astronomers in Context

Johannes Kepler (December 27, 1571- November 15, 1630), summarized his discoveries with three physical principles. First, the planets move in elliptical orbits, but not perfect circles, with the Sun at one focus. Second, he argued that the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between the central body and that arc. Third, there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits. These principles, later became laws, improved Copernicus’s solar system and helped to explain some astronomical phenomena.

When Kepler was alive, France’s King Henry IV converted from Protestantism to Roman Catholicism. Henry IV of France, a progressive king who is religiously tolerant, is assassinated by François Ravaillac, who is unbalanced and highly religious.Also, Sweden joined the Thirty Year’s War. The Swedes invade northern Germany and won multiple bateles and finally had decisive victory. Elizabeth I (September 7 1533 – March 24 1603), was also alive at the same time as Kepler, was undisputedly one of the greatest monarchs of England who ruled the country from 1558 to 1603. Popularly known as the Virgin Queen, her 45 years of reign marked a glorious epoch in English history.

It is obvious to notice that scientists were slowed down by limited technology. It took decades and generations for people to develop technology and to discover the universe with limited technology. Also because of this slow process, the world did not improve much and the big events that were happening were mostly wars. It is glad to see that later scientist solidified Kepler’s three laws and facilitated the learning of the universe at that time.

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Historical Astronomers in Context

Johannes Kepler (December 27, 1571- November 15, 1630), summarized his discoveries with three physical principles. First, the planets move in elliptical orbits, but not perfect circles, with the Sun at one focus. Second, he argued that the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between the central body and that arc. Third, there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits. These principles, later became laws, improved Copernicus’s solar system and helped to explain some astronomical phenomena.

When Kepler was alive, France’s King Henry IV converted from Protestantism to Roman Catholicism. Henry IV of France, a progressive king who is religiously tolerant, is assassinated by François Ravaillac, who is unbalanced and highly religious.Also, Sweden joined the Thirty Year’s War. The Swedes invade northern Germany and won multiple bateles and finally had decisive victory. Elizabeth I (September 7 1533 – March 24 1603), was also alive at the same time as Kepler, was undisputedly one of the greatest monarchs of England who ruled the country from 1558 to 1603. Popularly known as the Virgin Queen, her 45 years of reign marked a glorious epoch in English history.

It is obvious to notice that scientists were slowed down by limited technology. It took decades and generations for people to develop technology and to discover the universe with limited technology. Also because of this slow process, the world did not improve much and the big events that were happening were mostly wars. It is glad to see that later scientist solidified Kepler’s three laws and facilitated the learning of the universe at that time.

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