Essay Cival War

Submitted By ranbob226
Words: 480
Pages: 2
Open Document
Galileo is often incorrectly credited with the creation of a telescope. Instead, he significantly improved upon them. In 1609, he first learned of the existence of the spyglass, which excited him. He began to experiment with telescope-making, going so far as to grind and polish his own lenses. His telescope allowed him to see with a magnification of eight or nine times. In comparison, spyglasses of the day only provided a magnification of three.
It wasn't long before Galileo turned his telescope heavenward. He was the first to see craters on the moon, discover sunspots, and track the phases of Venus. The rings of Saturn puzzled him, appearing as lobes and vanishing when they were edge-on - but he saw them, which was more than can be said of his contemporaries. And recent research seems to imply he discovered Neptune two centuries before it was officially known.
Of all of his telescope discoveries, he is perhaps most known for his discovery of the four most massive moons of Jupiter: Io, Ganymede, Europa, and Callisto, now called the Galilean moons. When NASA sent a mission to Jupiter in the 1990s, it was called Galileo in honor of the famed astronomer.
Copernican system
In Galileo's lifetime, all celestial bodies were thought to orbit the Earth. Supported by the Catholic Church, teaching opposite of this system was declared heresy in 1615.
Galileo, however, did not agree. His research — including his observations of the phases of Venus and the fact that Jupiter boasted moons that didn't orbit Earth — supported the Copernican system, which (correctly) stated that the Earth and other planets circle the sun.
In 1616, he was summoned to Rome and warned not to teach or write about this controversial theory. But in 1632, believing that he could write on the subject if he treated it as a mathematical proposition, he
Show More

Related Documents: Essay Cival War

Essay about Chinas Dynasty

feudalism. Under feudal system, nobles owned the land. A noble's land consisted of a walled town and the farms around it. Peasants paid the nobles so they could farm the land. In return, the nobles paid the king and sent soldiers to help him in times of war. During the Zhou period, teachers taught the people to read and write using pictures, or characters, to stand for words. So even though people across China spoke different dialects, they could communicate with each other through writing. The Shang…

Words 703 - Pages 3

Beauty By Anna Fristia Sparknotes

Anna: Anna Frith is the story’s narrator and it is through her firsthand account that we experience how the arrival of the plague and subsequent quarantine impact the village’s townspeople. When the story opens in 1665, Anna is a widow of 18 with two young sons. She is a timid, provincial girl with little knowledge of the world outside her tiny rural village. Anna’s life changes dramatically when the plague strikes the village. As Anna grapples with the devastation brought about by the disease and…

Words 824 - Pages 4