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Jeopardy - Mr. Morrow`s Class
Jeopardy - Mr. Morrow`s Class

... Stars do not move, but because Earth is rotating it looks like they move across the night sky from east to west. ...
Exam 3
Exam 3

... The rings of Saturn appear very different from the rings associated with the other Jovian moons. This is because a) the rings of Saturn are composed of different types of material b) the size of the particles that make up the Saturnian rings are larger than those that make up the rings of the other ...
Shashanka R. Gurumath1, Hiremath KM2, and
Shashanka R. Gurumath1, Hiremath KM2, and

... Humans' quest is to understand how the universe is originated and has been evolved; how the stars, planets and finally life is emerged on the Earth? Solar system still not revealed most of its mysteries despite of many theories were proposed on its formation and evolution. In addition, humans’ are e ...
exercise 1 - basic phys, chem
exercise 1 - basic phys, chem

... Exercise 1: A bit of math, chemistry and physics Astronomy requires a foundation of physics and chemistry. In this exercise, you’ll go over some of the chemical and physical ideas that recur throughout this course. Length scales and units One of the basic aspects of science, in contrast to other “wa ...
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... Moreover, electrons from within an atom can be ejected (ionized). The resulting atom is called an ion, and will contain fewer electrons than protons, resulting in a net positive charge; this type of ion is called a cation. Meanwhile, the electron that was ionize can stabilize around a different atom ...
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Lecture 2: Exoplanets and life

... •  Venus spectrum: photons emanate from cold, high parts of the (IR-optically thick) atmosphere. No photons here go from the hot 735 K surface directly to space. •  Exoplanets: we may need to infer the amount of greenhouse gases from spectra and use models to estimate the surface temperature if ther ...
70 Thousand Million, Million, Million Stars in Space
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... number increased sharply. Today, 1779 are numbered (Ephemerides, Chebotarev, 1971) and accurate orbits have been calculated. There are in addition, however, a large number of smaller asteroids which usually have only been seen and identified once, at the time of their discovery. According to the rec ...
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Inquiry Activity - Ball State University

... the most unlike a circle, but it’s still pretty close!). Explain that the other planets’ orbits are even closer to a perfect circle than Pluto’s orbit. 2. Setup the classroom as shown in the figure below: a. Have the students push all of the desks and chairs against one side of the room (you need a ...
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... parts of the illuminated Moon to be visible from Earth. They didn’t know that the Moon never really changes shape. To make sense of this mystery, ancient Hindus believed that the Moon held a special drink that only gods could consume. As the gods drank the special liquid, the Moon shrank. When the g ...
Session 1 - Museum of Natural Science and History
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... heretical concept for his time that the Earth and planets revolve around the Sun. He maintained that the stars were other suns, immensely far away, accounting for their faintness and absence of parallax (Q. 113). Using rigorous trigonometric methods, he was the first to calculate the distances to the ...
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... E) F type 37) For main sequence stars, the general rule is that the lower the surface temperature, … A) the greater the size of the core B) the greater the masses of the stars. C) the less luminous are the stars. D) the greater the diameter of the star E) the shorter the lifetime on the main sequenc ...
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... In figure 2.1 you can see an image of the Earth from the software program Google-Earth. The location 51◦ 27’29.94” N 2◦ 36’07.09” W points toward the centre of Bristol, the top of the Physics building of the University of Bristol to be exact.1 In this notation the number of degrees North (52) can be ...
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... huge, spinning ball of hot, glowing gases lights up Earth and provides us with heat. The Sun has a north and south pole, just like Earth, and rotates on its axis. A planet’s distance from the Sun, along with its atmosphere, determines whether it can support liquid water and life as we know it. Plane ...
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... Read the passage below. Then, answer questions 9–10. The Chandler Wobble In 1891, an American astronomer named Seth Carlo Chandler, Jr., discovered that Earth “wobbles” as it spins on its axis. This change in the spin of Earth’s axis, known as the Chandler wobble, can be visualized if you imagine th ...
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... to 1/137 for carbon atoms to exist, and carbon atoms are required for us to be here writing about cosmology. However, these arguments have nothing to do with explaining what physical laws led to this particular value of a. … The anthropic principle is an observation, not an explanation. To believe o ...
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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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