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Introduction: The Night Sky
Introduction: The Night Sky

... Important for our understanding of underlying physics ...
8 Grade/Comp.Sci.III adv Course Code: 2002110
8 Grade/Comp.Sci.III adv Course Code: 2002110

... Gravity and the Solar System Gravity Overview 1. Define gravity The Laws of Planetary Motion 1. State Kepler’s first, second, and third laws of planetary motion. Page 2 of 4 ...
1” “Sky-Notes” of the Open University Astronomy Club. April 2006. 1
1” “Sky-Notes” of the Open University Astronomy Club. April 2006. 1

... To the east of Leo a closer inspection of what at first appears to a casual glance to be a large hazy patch reveals a beautiful scattering of moderate to faint stars. This is the Coma star cluster (Mel 111) best seen in binoculars and well worth a photograph. 2 Com ds (6.0, 7.5) separation 3.6". Use ...
Here
Here

... What Causes the Seasons? • Because of the tilt of the Earth’s axis, the altitude the Sun reaches changes during the year: It gets higher above the horizon during the summer than it does during the winter. • Also, the length of the daytime hours changes during the year: the daylight hours are longer ...
Chapter 25 PowerPoint
Chapter 25 PowerPoint

... the Greeks. • The stars in a constellation may appear close, however each star can be millions of light-years away from each other. • There are 88 constellations used to divide the night sky. ...
EARTH IN THE UNIVERSE TOPIC 3 2011-2012
EARTH IN THE UNIVERSE TOPIC 3 2011-2012

... At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our planet. Six months later it would pass 300,000 miles from Earth’s orbit, only a little more than the distance to the Moon…. Hermes approaches Earth’s orbit t ...
star
star

... brightness.  Other  important  properties  of  stars   include  their  chemical  composition  and  mass.     ...
Davis Planetarium
Davis Planetarium

... to late November, look low in the eastern sky around 6:15am. Come mid to late December, look low in the northern sky around 5:15pm. For updates and more information, keep an eye on this website http://www.isoncampaign.org Winter Solstice, December 21 – is the shortest day of the year for the Norther ...
quiz 1 Spring 1995
quiz 1 Spring 1995

... rises after midnight … this thin a crescent would rise after 3 am so, no, a six year old should not be out! 13) For the following questions, refer to the Sky Gazer’s Almanac. a)2 When did the most recent 3rd quarter moon occur? (date and time) October 2nd at 10 pm EST or 11 pm EDT b)2 When will the ...
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... 17) Which two bodies have the strongest attractive force between them? A) Two 1 kg balls that are 1 meter apart. B) Two bodies each with the mass of the Sun that are one light year apart. C) Two bodies each with the mass of the Earth that are 1 AU apart. D) Two bodies each with the mass of Jupiter t ...
Name
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... 17) Which two bodies have the strongest attractive force between them? A) Two 1 kg balls that are 1 meter apart. B) Two bodies each with the mass of the Sun that are one light year apart. C) Two bodies each with the mass of the Earth that are 1 AU apart. D) Two bodies each with the mass of Jupiter t ...
Name
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... A) Two 1 kg balls that are 1 meter apart. B) Two bodies each with the mass of the Sun that are one light year apart. C) Two bodies each with the mass of the Earth that are 1 AU apart. D) Two 100 kg balls that are 1 km apart. E) Two bodies each with the mass of Jupiter that are 10 AU apart. 18) Which ...
Oct 2011 - Bays Mountain Park
Oct 2011 - Bays Mountain Park

... Neptune in 1986. It is the seventh largest moon in the Solar System, with more mass than all the remaining smaller moons combined. But, unlike all other large moons, Triton exhibits a retrograde orbit, orbiting Neptune opposite the direction that Neptune rotates on its axis. All moons that have retr ...
Introduction to the Celestial Sphere
Introduction to the Celestial Sphere

... If you watch the skies for a few hours, you will note the apparent motion of this fictitious celestial sphere and all things on it. This apparent motion is caused by the spinning motion (rotation) of the Earth on its axis. ...
Copernicus
Copernicus

... • Ptolemy used geometric models to predict the positions of the sun, moon, and planets, using combinations of circular motion known as epicycles. • An epicycle is an orbit within an orbit • Having set up this model, Ptolemy then went on to describe the mathematics which he needed in the rest of the ...
Stars Notes
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... stars in the Milky Way galaxy and that stars may differ in size, temperature and color  4.d – Students know that stars are the source of light for all bright objects in outer space and that the Moon and planets shine by reflected sunlight, not by their own light ...
Historical overview
Historical overview

... If you give a wrong answer or comment during class (which you thought was right): even better!! ...
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... 4. Write a letter to an alien to explain to him why we have day and night. C. Act Out Day and Night I can explain what causes day and night. 1. Set the lamp in the middle of the room. Have the students stand in a circle around the lamp facing the light. 2. The class pretends that the lamp is the sun ...
Statistical challenges in modern astronomy
Statistical challenges in modern astronomy

... • Some statistical procedures are based on mathematical proofs which determine the applicability of established results. It is perilous to violate mathematical truths! Some issues are debated among statisticians, or have no known solution. • Scientific inferences should not depend on arbitrary choic ...
The mystery of cosmic oceans and dunes Earth
The mystery of cosmic oceans and dunes Earth

... planets and their characteristics. Bulk density measurements and multiband spectral data allow planets with Earth-like water contents to be distinguished from ocean or dune planets by future observations. Of the stars observed within 30 light years of the Sun, 60% are less than 0.3 the mass of the S ...
Chapter 16 - "The Universe"
Chapter 16 - "The Universe"

... • Once you have established the celestial equator, the celestial poles, and the celestial meridian, you can use a two-coordinate horizon system to locate positions in the sky. – One popular method of using this system identifies the altitude angle (in degrees) from the horizon up to an object on th ...
Powerpoint file
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... • A multi-planet system around a milli-second pulsar • Candidates around pulsating white dwarfs (GD 66) , one sdB star (V 391 Peg) and eclipsing WD systems (NN Ser & DP ...
Secular Increase of the Astronomical Unit: a Possible Explanation in
Secular Increase of the Astronomical Unit: a Possible Explanation in

... influence of dark matter (Arakida 2008), and so on. UnfortuTE nately, however, so far none of them seems to be successful. or equivalently TPE ' 2.1 (ms cy1 ), where we have used In this paper, we will take another viewpoint, and give an ...
The sun is a star. It is a huge, spinning, glowing sphere of hot gas
The sun is a star. It is a huge, spinning, glowing sphere of hot gas

... hundreds to tens of thousands of miles across (many times larger that Earth). Scientists measure the total size (area) of all of the sunspots seen on the sun every day to get a measure of how active the sun is. Sunspots are not permanent. They appear and disappear on the surface of the sun. They are ...
Lecture 17: General Relativity and Black Holes
Lecture 17: General Relativity and Black Holes

... 1. The Sun is located at the center of the Milky Way Galaxy. True or false 2. Shapley overestimated the dimensions of the Milky Way Galaxy because he failed to account for interstellar extinction by dust. True or false 3. The Herschels attempted to determine the galaxy's structure by (a) looking for ...
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History of astronomy



Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of pre-history: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy, and not completely disentangled from it until a few centuries ago in the Western World (see astrology and astronomy). In some cultures, astronomical data was used for astrological prognostication.Ancient astronomers were able to differentiate between stars and planets, as stars remain relatively fixed over the centuries while planets will move an appreciable amount during a comparatively short time.
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