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... Mars, Jupiter, Saturn • the simplest model can't explain retrograde motion – Epicycle (Ptolemy) • Discrepancies between the predicted and true positions of the planets • artificial, the planets orbit around empty space ...
... Mars, Jupiter, Saturn • the simplest model can't explain retrograde motion – Epicycle (Ptolemy) • Discrepancies between the predicted and true positions of the planets • artificial, the planets orbit around empty space ...
PHYS 200 - Understanding the Universe
... • Report on: what makes up the solar system, what is the physical difference between planets and stars, whether stars live forever, and what makes up our Milky Way Galaxy. • Comprehend that cosmic bodies are always in motion relative to each other. That for example the relative motion of the Earth, ...
... • Report on: what makes up the solar system, what is the physical difference between planets and stars, whether stars live forever, and what makes up our Milky Way Galaxy. • Comprehend that cosmic bodies are always in motion relative to each other. That for example the relative motion of the Earth, ...
Seasons
... b. The apparent center of the arcs is Polaris (north star) WHY? i. Since Polaris is located above the Earth’s axis of rotation, the stars and planets seem to rotate counterclockwise around Polaris at approximately 15o per hour. WHY 15o per hour? ii. The apparent daily motion of stars, moon, and pla ...
... b. The apparent center of the arcs is Polaris (north star) WHY? i. Since Polaris is located above the Earth’s axis of rotation, the stars and planets seem to rotate counterclockwise around Polaris at approximately 15o per hour. WHY 15o per hour? ii. The apparent daily motion of stars, moon, and pla ...
History and Philosophy of Western Astronomy
... He started making an atlas for bright stars and measured the stellar positions very accurately. He compared his measurements to those from 170 years ago, and found that all positions systematically differed by 2o. Thus he discovered precession. His value was accurate to 10%. L. Ptolemy’s Geocentric ...
... He started making an atlas for bright stars and measured the stellar positions very accurately. He compared his measurements to those from 170 years ago, and found that all positions systematically differed by 2o. Thus he discovered precession. His value was accurate to 10%. L. Ptolemy’s Geocentric ...
Astronomy Through the Ages: 2 Middle ages through Renaissance
... Strongest cultural institution in the middle ages was the church, which provided the major support for education and scholarship. – Large monasteries developed libraries and schools. Which eventually evolved ...
... Strongest cultural institution in the middle ages was the church, which provided the major support for education and scholarship. – Large monasteries developed libraries and schools. Which eventually evolved ...
measure
... Even the nearest star shows a parallax shift of only 1/2000th the width of the full Moon ...
... Even the nearest star shows a parallax shift of only 1/2000th the width of the full Moon ...
The movements of planets and other nearby objects are
... The movements of planets and other nearby objects are visible from Earth. A jet plane travels at a greater speed and altitude than a bird. Yet if a bird and a plane flew overhead at the same time, you might think that the bird was faster. You would have this impression because the farther away a mov ...
... The movements of planets and other nearby objects are visible from Earth. A jet plane travels at a greater speed and altitude than a bird. Yet if a bird and a plane flew overhead at the same time, you might think that the bird was faster. You would have this impression because the farther away a mov ...
Chapter 3 The Science of Astronomy
... telescope technology. (But Galileo did NOT invent the telescope!) • Was the first to meticulously report telescope observations of the sky to support the Copernican Model of the Universe. ...
... telescope technology. (But Galileo did NOT invent the telescope!) • Was the first to meticulously report telescope observations of the sky to support the Copernican Model of the Universe. ...
lecture3
... experiments and observations to understand the world. He heard of the invention of the telescope in Holland, and built a rudimentary telescope that he turned on the heavens. Galileo also pioneered experiments in physics, demonstrating the rules that govern falling bodies. ...
... experiments and observations to understand the world. He heard of the invention of the telescope in Holland, and built a rudimentary telescope that he turned on the heavens. Galileo also pioneered experiments in physics, demonstrating the rules that govern falling bodies. ...
Kepler`s Laws
... • ~140 BC: Ptolemy perfects the geocentric model of the solar system – Uses epicycles to explain retrograde motion. – Note the displacement of Earth from the center o f the circle. – Each epicycle has a different rate ...
... • ~140 BC: Ptolemy perfects the geocentric model of the solar system – Uses epicycles to explain retrograde motion. – Note the displacement of Earth from the center o f the circle. – Each epicycle has a different rate ...
Volcanoes and Igneous Activity Earth
... remained in the same relative position to one another, except the seven “wanderers” which were: the sun, the moon, Mercury, Venus, Mars, Jupiter, and Saturn. ...
... remained in the same relative position to one another, except the seven “wanderers” which were: the sun, the moon, Mercury, Venus, Mars, Jupiter, and Saturn. ...
The Copernican Revolution
... many different things including art, literature, religion, philosophy, and science. There were many influential people that came out of this time period among them are Shakespeare, Michelangelo, Galileo, Leonardo Di Vinci, Isaac Newton, and Copernicus. (Renaissance, 2010) The Roman Catholic Church T ...
... many different things including art, literature, religion, philosophy, and science. There were many influential people that came out of this time period among them are Shakespeare, Michelangelo, Galileo, Leonardo Di Vinci, Isaac Newton, and Copernicus. (Renaissance, 2010) The Roman Catholic Church T ...
Johannes Kepler
... Gravity is Introduced Even if Kepler had not provided the information he learned about the planets and their motions, Newton still could have predicted his law of universal gravity. However, the important result of Kepler’s laws were that Newton’s proposal of gravity strengthened the laws, mainly t ...
... Gravity is Introduced Even if Kepler had not provided the information he learned about the planets and their motions, Newton still could have predicted his law of universal gravity. However, the important result of Kepler’s laws were that Newton’s proposal of gravity strengthened the laws, mainly t ...
Lecture 3
... • Model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
... • Model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
Integrative Studies 410 Our Place in the Universe
... – Argued that the planets move on spheres around the Earth (“geocentric” model) – Argues that the earth is spherical based on the shape of its shadow on the moon during lunar eclipses ...
... – Argued that the planets move on spheres around the Earth (“geocentric” model) – Argues that the earth is spherical based on the shape of its shadow on the moon during lunar eclipses ...
File - Mrs. Andrews` CBA classes
... The Planets sometime appear to be large, bright, and close compared to other times when they seem smaller, dimmer, and farther away. Ptolemy tried to shift each planet so that the earth was no longer the center causing an eccentric (off-center circle). Astronomers were offended by this because ...
... The Planets sometime appear to be large, bright, and close compared to other times when they seem smaller, dimmer, and farther away. Ptolemy tried to shift each planet so that the earth was no longer the center causing an eccentric (off-center circle). Astronomers were offended by this because ...
Chapter 18 Notes
... • Ptolemy – Circa 140 C.E., developed the theory that placed the Earth at the center of the universe. Successful in that this belief persisted for over 1500 years and did accurately predict the motions of the planets. • Nicholai Copernicus – Developed a new theory that placed the sun at the center o ...
... • Ptolemy – Circa 140 C.E., developed the theory that placed the Earth at the center of the universe. Successful in that this belief persisted for over 1500 years and did accurately predict the motions of the planets. • Nicholai Copernicus – Developed a new theory that placed the sun at the center o ...
Study Guide for Quiz on Astronomy: The Moon, Sun and Stars
... 17. How is distance measured in the universe? __________________________________________ 18. In which galaxy do we live? __________________________________What kind of galaxy is it? ___________ At what location in our galaxy is our solar system?________________________ 19. Which planet is considered ...
... 17. How is distance measured in the universe? __________________________________________ 18. In which galaxy do we live? __________________________________What kind of galaxy is it? ___________ At what location in our galaxy is our solar system?________________________ 19. Which planet is considered ...
The Case against Copernicus
... of “heliocentrism,” the claim that Earth rotates daily and revolves annually around the sun, which we all accept today. The Copernican system was a direct challenge to the long-held belief, codified by second-century astronomer Ptolemy in his book the ...
... of “heliocentrism,” the claim that Earth rotates daily and revolves annually around the sun, which we all accept today. The Copernican system was a direct challenge to the long-held belief, codified by second-century astronomer Ptolemy in his book the ...
Chapter 4 Gravitation and the Waltz of the Planets
... 2. Why did Copernicus think that the Earth and the other planets revolved around the Sun? 3. What did Galileo see in his telescope that confirmed that planets orbit the Sun? 4. How did Tycho Brahe attempt to test the ideas of Copernicus? 5. What paths do the planets follow as they move around the Su ...
... 2. Why did Copernicus think that the Earth and the other planets revolved around the Sun? 3. What did Galileo see in his telescope that confirmed that planets orbit the Sun? 4. How did Tycho Brahe attempt to test the ideas of Copernicus? 5. What paths do the planets follow as they move around the Su ...
Copernican heliocentrism
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds. The Copernican model departed from the Ptolemaic system that prevailed in Western culture for centuries, placing Earth at the center of the Universe, and is often regarded as the launching point to modern astronomy and the Scientific Revolution.Copernicus was aware that the ancient Greek Aristarchus had already proposed a heliocentric theory, and cited him as a proponent of it in a reference that was deleted before publication, but there is no evidence that Copernicus had knowledge of, or access to, the specific details of Aristarchus' theory. Although he had circulated an outline of his own heliocentric theory to colleagues sometime before 1514, he did not decide to publish it until he was urged to do so late in his life by his pupil Rheticus. Copernicus's challenge was to present a practical alternative to the Ptolemaic model by more elegantly and accurately determining the length of a solar year while preserving the metaphysical implications of a mathematically ordered cosmos. Thus his heliocentric model retained several of the Ptolemaic elements causing the inaccuracies, such as the planets' circular orbits, epicycles, and uniform speeds, while at the same time re-introducing such innovations as,Earth is one of several planets revolving around a stationary Sun in a determined orderEarth has three motions: daily rotation, annual revolution, and annual tilting of its axisRetrograde motion of the planets is explained by Earth's motionDistance from Earth to the Sun is small compared to the distance to the stars.↑ 1.0 1.1 ↑