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Instructor Notes
Instructor Notes

... Moons of Jupiter – Io and Europa are larger than Pluto, Callisto is only slightly smaller  than Mercury, and Ganymede is larger than Mercury – three of these may have liquid  water layers in their interiors  Titan  ...
Seasons
Seasons

... Earth’s rotation • The Earth rotates on its axis (imaginary vertical line around which Earth spins) every 23 hours & 56 minutes. • One day on Earth is one rotation of the Earth. ...
Exam Name___________________________________
Exam Name___________________________________

... C) rise as the Sun is setting. ...
Mercury - alexanderscience8
Mercury - alexanderscience8

... set of rings in the solar system. We now know that Saturn has 62 moons in addition to its complex ring system. Have you ever seen the Southern or Northern Lights? Earth isn't the only planet that puts on these beautiful light shows, which are also called the "aurora". Aurora have been seen at both p ...
Planets orbit the Sun at different distances.
Planets orbit the Sun at different distances.

... You may have seen some planets in the sky without realizing it. They are so far from Earth that they appear as tiny dots of light in the darkened sky. If you have seen something that looks like a very bright star in the western sky in the early evening, you have probably seen the planet Venus. Even ...
SNC 1D1 Space Unit Review Answers How long does it take the
SNC 1D1 Space Unit Review Answers How long does it take the

... 23. Why is the length of a year on Earth different from the length of a year on other planets? Because they have different lengths of time that they take to orbit the Sun. 24. Name and describe the predominant scientific theory on how the universe was formed. -Big Bang Theory: 14 billion years ago, ...
Rotation - Cloudfront.net
Rotation - Cloudfront.net

... night and day  There are two kinds of days!  Mean Solar day – time interval from one noon to the next (~ 24 hours)  Sidereal day – the time it takes for the Earth to make one complete rotation with respect to a star other than our sun (23 hours, 26 minutes, and 4 seconds)  We use the mean solar ...
Document
Document

... The moon’s large size and low density suggest that it may have emerged from such an explosion. The impact would have been so huge that material from the Earth’s outer 4. _______________ would layer have been sent hurtling into space. This “impact” theory is widely accepted but is still just one theo ...
Midterm exam
Midterm exam

... 24. At the time of the Summer Solstice (the start of summer) the Sun is a. Farthest south of the celestial equator. b. Farthest north of the celestial equator. c. On the celestial equator moving north. d. On the celestial equator moving south. 25. The Sun’s position in space is best described as th ...
Slide 1
Slide 1

... A. 4th and 2nd quadrant have the same application B. 1st and 3rd quadrant have opposite application C. 2nd and 1st quadrant have the same application D. 3rd and 4th quadrant have the same application ...
Space - mrhandley.co.uk
Space - mrhandley.co.uk

... largest of the nine planets. Saturn's rings, unlike the rings of the other gas planets, are very bright. When viewing Saturn through a small telescope, it appears a bit "squished." This is because its structure isn't very rigid (it's mostly gas and liquid), and it becomes slightly "compressed" as it ...
The Solar System
The Solar System

... Example: Because the Moon has so much less mass than the Earth, there is much less gravitational pull on the Moon than on the Earth, therefore, you would weigh less on the Moon and have a much easier time jumping into the air. [However, your mass will remain the same because you didn’t change the am ...
How space is explored?
How space is explored?

... everything  in  it   1.  It  is  believed  to  be  infinite  in   volume   2.  The  observable  universe  is  a   sphere  around  earth  with  a  radius   of  46  billion  light  years.   B.  The  universe  is  ge@ng  larger.   1.  There ...
Class notes
Class notes

... The arrival of the solar wind particles stimulates the particles in the Earth’s atmosphere. This is what triggers the spectacular light show of the polar auroras. It is usually observed as a green glow shimmering over the horizon. Types of Polar Auroras There are two types of polar auroras: •the aur ...
Star Chart_May-June_2016
Star Chart_May-June_2016

... permanent link to the sky myths and legends of the past. This season's evening sky features the Big Dipper. Its seven stars are bright enough to be visible through the glow of a city sky. Not a true constellation, the Big Dipper forms pattern of stars found within the constellation known as Ursa Maj ...
Other Celestial Objects - science9atsouthcarletonhs
Other Celestial Objects - science9atsouthcarletonhs

...  Most meteoroids are small and burn up due to the heat of friction through the atmosphere. ...
THE SOLAR SYSTEM OUR SOLAR SYSTEM IS THOUGHT TO BE
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... TRILLION ICY OBJECTS AND IS THOUGHT TO BE THE ORIGIN OF MOST COMETS. ...
The Solar System
The Solar System

... Early Thought and Models • Nicolaus Copernicus (1473-1543)- proposed the heliocentric model • Johannes Kepler (15711630)- propsed that the orbits around the sun were ellipses ...
Document
Document

... More violent and rapid impact accretion. The final stage of accretion has been described as 'runaway accretion'. Planetesimals are swept up into well defined zones around the sun which approximate to the present orbits of the terrestrial planets. The process leads eventually to a small number of lar ...
ASU Chain Reaction - Volume 3 - LeRoy Eyring Center For Solid
ASU Chain Reaction - Volume 3 - LeRoy Eyring Center For Solid

... the past few decades. Planetary geologists study the extreme conditions on Earth and other planets in an effort to understand what those bodies are like and how they formed. Astrobiologists study life under Earth’s most hostile conditions in an effort to predict where life might exist on other plane ...
February 2012
February 2012

... along the sequence of the Zodiac. However, as the Earth moves around the Sun, our view of planets occasionally makes them appear to reverse their motion. Mars will have appeared to stop moving on January 24th, and a backing up motion will proceed until mid-April. Careful observers can use Regulus, t ...
–1– AST104 Sp04: WELCOME TO EXAM 1 Multiple Choice
–1– AST104 Sp04: WELCOME TO EXAM 1 Multiple Choice

... lipses with the sun at one focus a gravitational force on us 1/9 as strong. c*. the deflection of light from distant stars b. the sun would appear 1/9 as bright with by the sun’s gravity a gravitational force on us 1/3 as strong. d. how massive objects accelerate to the c. the sun would appear 1/3 a ...
Chapter 22 Touring our Solar System Solar System * Inventory • 1
Chapter 22 Touring our Solar System Solar System * Inventory • 1

... • Core must be non-metallic, non-liquid, or both ...
Our Solar System - Eastern Wayne High
Our Solar System - Eastern Wayne High

... IDEAS that are Not true! SUN, PLANETS, AND STARS ORBITED A STATIONARY EARTH meaning “Earth centered” or “Geocentric.” ...
Universal Gravitation Principle of Superposition Gravity and the Earth
Universal Gravitation Principle of Superposition Gravity and the Earth

... all other mass. This is the rst time the concept of gravity was extended beyond the earth to include planets, moons, and stars. Through careful measurements, he was able to show that the force causing the curved path of the moon was the same as the force causing objects to fall to the earth. Newton ...
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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.
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