Astronomy Study Guide
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
... The latitude/longitude coordinate system and our system of time are based on celestial observations. 0° longitude Early Astronomers were able to look to the constellations to determine that the earth was moving at a predictable rate. 0° latitude Moons are seen by reflected light. Our Moon orbits Ear ...
A Short History of Astronomy
... • 1543CE Nicholaus Copernicus - Heliocentric and retains Plato’s idea of perfect circles. • 1610 Galileo Galilei builds a telescope, and confirms by observation, that the Earth moves around the Sun. • It took the Catholic Church a further 350 years to concede that Galileo was right! ...
... • 1543CE Nicholaus Copernicus - Heliocentric and retains Plato’s idea of perfect circles. • 1610 Galileo Galilei builds a telescope, and confirms by observation, that the Earth moves around the Sun. • It took the Catholic Church a further 350 years to concede that Galileo was right! ...
Astronomy and Humanism by Ray Thompson A. EARLY
... that the spectra of very distant stars were much redder than they should be when the spectral class of the star was taken into account. In addition, the further away the objects were, the more pronounced was the move into the red end of the spectrum. Only one thing could explain this. The objects we ...
... that the spectra of very distant stars were much redder than they should be when the spectral class of the star was taken into account. In addition, the further away the objects were, the more pronounced was the move into the red end of the spectrum. Only one thing could explain this. The objects we ...
Name: Date: Period: ______ Unit 9
... 3. How did the land and atmosphere of Earth form? 4. How do the theories of Aristotle and Copernicus differ? 5. What did Ptolemy propose about the solar system? 6. What is a protoplanet? 7. What is differentiation? What part(s) of Earth did this create? 8. What is Kepler’s first law? 9. What is outg ...
... 3. How did the land and atmosphere of Earth form? 4. How do the theories of Aristotle and Copernicus differ? 5. What did Ptolemy propose about the solar system? 6. What is a protoplanet? 7. What is differentiation? What part(s) of Earth did this create? 8. What is Kepler’s first law? 9. What is outg ...
The most important questions to study for the exam
... • A sixteenth-century Polish astronomer named Copernicus • A seventeenth-century German astronomer named Kepler • An ancient Greek astronomer named Aristarchus 7. In the heliocentric model of the solar system, the retrograde, or "backward," westerly motion of a planet against the background stars is ...
... • A sixteenth-century Polish astronomer named Copernicus • A seventeenth-century German astronomer named Kepler • An ancient Greek astronomer named Aristarchus 7. In the heliocentric model of the solar system, the retrograde, or "backward," westerly motion of a planet against the background stars is ...
Pre SS1 Models of the Solar System - Bolinas
... Ptolemy’s appears to have been the most generous. Certainly he thought it grand, and he liked to remark, with an astronomer’s fondness for wielding big numbers, that in his universe the Earth was but “a point” relative to the heavens. And, indeed, it was enormous by the standards of a day when celes ...
... Ptolemy’s appears to have been the most generous. Certainly he thought it grand, and he liked to remark, with an astronomer’s fondness for wielding big numbers, that in his universe the Earth was but “a point” relative to the heavens. And, indeed, it was enormous by the standards of a day when celes ...
7.4 Meet Your Solar System
... The current heliocentric (Sun-centered) model of the solar system was first introduced in the 1500s by Polish astronomer Nicolaus Copernicus. Previous models of the solar system were geocentric (Earth-centered), originating with the Greek astronomer Ptolemy. ...
... The current heliocentric (Sun-centered) model of the solar system was first introduced in the 1500s by Polish astronomer Nicolaus Copernicus. Previous models of the solar system were geocentric (Earth-centered), originating with the Greek astronomer Ptolemy. ...
Seasons On Earth Notes
... Sunrise and Sunset Times • For 1,000’s of years astronomers have noticed the Sun gradually changes its apparent position in the sky over the course of the year. It seems to move about 1 degree each day. ...
... Sunrise and Sunset Times • For 1,000’s of years astronomers have noticed the Sun gradually changes its apparent position in the sky over the course of the year. It seems to move about 1 degree each day. ...
Study Guide for 1ST Astronomy Exam
... Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West at any given latitude, Define a constellation and distinguish it from an asterism, Use celestial coordinates of Right Ascension an ...
... Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West at any given latitude, Define a constellation and distinguish it from an asterism, Use celestial coordinates of Right Ascension an ...
Light Years Away
... 3. Reflected sunlight from the Moon's surface takes ______seconds to travel the distance to the Earth. A. 1.2 seconds B. 1.2 minutes C. 1.2 hours D. 1.2 days ...
... 3. Reflected sunlight from the Moon's surface takes ______seconds to travel the distance to the Earth. A. 1.2 seconds B. 1.2 minutes C. 1.2 hours D. 1.2 days ...
Science
... • 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. ...
Lunar Data Comparison 3 – Sidereal vs
... Obviously, there cannot be two different circumferences of the Earths absolute 360 degree orbit around the Sun. The time period of this model is equivalent to the prior models sidereal period, which has already been shown to equate to 360 degrees plus 50 arc seconds. The reason this model can show t ...
... Obviously, there cannot be two different circumferences of the Earths absolute 360 degree orbit around the Sun. The time period of this model is equivalent to the prior models sidereal period, which has already been shown to equate to 360 degrees plus 50 arc seconds. The reason this model can show t ...
Galileo & Newton - Academic Computer Center
... Newton’s Version of Kepler’s 3rd Law • Newton generalized Kepler’s 3rd Law so that it can be applied anywhere in the Universe not just to planets going around the Sun. (Remember P2(years) = a3(AU) ?) • Newton’s version includes the mass of the two objects. So if you know the period of the orbit and ...
... Newton’s Version of Kepler’s 3rd Law • Newton generalized Kepler’s 3rd Law so that it can be applied anywhere in the Universe not just to planets going around the Sun. (Remember P2(years) = a3(AU) ?) • Newton’s version includes the mass of the two objects. So if you know the period of the orbit and ...
Stars, Sun, and Moon Test Study Guide
... 3. What season is the Northern hemisphere experiencing when it is tilted towards the sun? ...
... 3. What season is the Northern hemisphere experiencing when it is tilted towards the sun? ...
Earth Science 2nd 9 wk review
... leucite (KAISi206) may be grouped together because they all contain silicon. ...
... leucite (KAISi206) may be grouped together because they all contain silicon. ...
SEM 1.4_Astronomy
... II. Characteristics of Our Solar System: The solar system consists of many types of celestial bodies. There are essentially two types of planets in our solar system: rocky (terrestrial) planets and the gas giants. The four inner (terrestrial) planets consist mostly of solid rock. Of the terre ...
... II. Characteristics of Our Solar System: The solar system consists of many types of celestial bodies. There are essentially two types of planets in our solar system: rocky (terrestrial) planets and the gas giants. The four inner (terrestrial) planets consist mostly of solid rock. Of the terre ...
E. Sci. Astronomy Notes
... Historically Earth was thought to be center of solar system (geocentric model) Heliocentric model is correct (Sun centered solar system) On Earth celestial objects appear to move from east to west in an arc pattern Sun/Stars Apparent Path #1 Looking North at Polaris #2 Looking West #3 Looking South ...
... Historically Earth was thought to be center of solar system (geocentric model) Heliocentric model is correct (Sun centered solar system) On Earth celestial objects appear to move from east to west in an arc pattern Sun/Stars Apparent Path #1 Looking North at Polaris #2 Looking West #3 Looking South ...
Quiz # 1 - Oglethorpe University
... c. the Sun moved among the planets, and pulled them out of their circular orbits d. the planets moved on a small circle whose center in turn circled a point near the Earth e. you can't fool me, Ptolemy's system did not include ANY explanation of retrograde motion We now know that the orbit of a stab ...
... c. the Sun moved among the planets, and pulled them out of their circular orbits d. the planets moved on a small circle whose center in turn circled a point near the Earth e. you can't fool me, Ptolemy's system did not include ANY explanation of retrograde motion We now know that the orbit of a stab ...
ASTR2050 Intro A&A NAMES: ____________________ ____________________ Work sheet
... Build a scale model of the solar system, including the sizes and orbital radii of the sun and planets. Most of the data you need can be found in Kutner, Appendices B and D, and Figure 17.3. Show the units in the following lists. 1. What celestial object did you use to set the scale, and what did you ...
... Build a scale model of the solar system, including the sizes and orbital radii of the sun and planets. Most of the data you need can be found in Kutner, Appendices B and D, and Figure 17.3. Show the units in the following lists. 1. What celestial object did you use to set the scale, and what did you ...
Geocentric model
In astronomy, the geocentric model (also known as geocentrism, or the Ptolemaic system) is a description of the cosmos where Earth is at the orbital center of all celestial bodies. This model served as the predominant cosmological system in many ancient civilizations such as ancient Greece including the noteworthy systems of Aristotle (see Aristotelian physics) and Ptolemy. As such, they believed that the Sun, Moon, stars, and naked eye planets circled Earth.Two commonly made observations supported the idea that Earth was the center of the Universe. The stars, the sun, and planets appear to revolve around Earth each day, making Earth the center of that system. The stars were thought to be on a celestial sphere, with the earth at its center, that rotated each day, using a line through the north and south pole as an axis. The stars closest to the equator appeared to rise and fall the greatest distance, but each star circled back to its rising point each day. The second observation supporting the geocentric model was that the Earth does not seem to move from the perspective of an Earth-bound observer, and that it is solid, stable, and unmoving.Ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth. It is not the same as the older flat Earth model implied in some mythology, as was the case with the biblical and postbiblical Latin cosmology. The ancient Jewish Babylonian uranography pictured a flat Earth with a dome-shaped rigid canopy named firmament placed over it. (רקיע- rāqîa').However, the ancient Greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in Western culture until the 17th century through the synthesis of theories by Copernicus and Kepler.The astronomical predictions of Ptolemy's geocentric model were used to prepare astrological and astronomical charts for over 1500 years. The geocentric model held sway into the early modern age, but from the late 16th century onward was gradually superseded by the heliocentric model of Copernicus, Galileo and Kepler. There was much resistance to the transition between these two theories. Christian theologians were reluctant to reject a theory that agreed with Bible passages (e.g. ""Sun, stand you still upon Gibeon"", Joshua 10:12 – King James 2000 Bible). Others felt a new, unknown theory could not subvert an accepted consensus for geocentrism.