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The Triquetrum was an instrument used to see how high an astronomical object was in the sky. The image shows a replica of the instrument used by Copernicus

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Below is the modern model of the universe. The theory was invented by Copernicus, and it is the theory we all know to be true
(The image shows a translated version of the theory)

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Copernicus observing the heavens from his tower in Frombork (a painting done by Jan Matejko in 1873)

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Copernicus observing the heavens from his tower in Frombork (a painting done by Jan Matejko in 1873)

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The painting below shows Copernicus admiring the cosmos above from his tower. He has many tools with him such as a compass (in his hand), a telescope (bottom right hand side) and a scroll of paper (right hand side of Copernicus). This gives us a bit of an idea of what Copernicus used in his studies.

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The model of the universe before Copernicus 

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The model of the universe before Copernicus 

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The model of the universe before Copernicus was very complicated, as shown on the diagram below. He simplified it, allowing us to understand the galaxy easier and more accurately.

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Nicolaus Copernicus was a renaissance man who revolutionised astronomy. Born 19th of February 1473 in Torun, Poland, Copernicus was a clergy man who also had a passion for science, especially medicine and mathematics and he took an interest in astronomy later on in his life. When he started studying astronomy, the standard model for the solar system at the time was the one created by second century astronomer, Ptolemy. This model placed earth at the center, with the sun and other  planets rotating around the earth. This was the standard Christian model as it was believed God would put his most special creation in the center, but this system was to complex and it didn’t work. So Copernicus created a theory about the cosmos. He placed the sun at the center of the cosmos, with the moon rotating around the earth, and earth rotating around the sun. This is the standard model we use today. He died May 24, 1543 at the age of 70 due to a stroke