Being asked most people would name the twelve constellations of the zodiac and some more they have heard of or even seen (most common is surely the Big Dipper‚ though it is not a constellation but an asterism). In total there are 88 constellations‚ which can be divided into eight constellation families (see Menzel‚ "A Field Guide to the Stars and Planetes"). Many names we use nowadays came from the ancient Greeks. They used to assign their gods and heroes to certain figures in the sky. Due to their
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and an observatory. This was the most ambitious undertaking of its kind since the foundation of the Alexandrian Museum (q. v. first half of third century B. C.). He built another observatory on the plain of Tadmor (Palmyra). The inclination of the ecliptic was found by his astronomers to equal 23o 33 ’ and tables of the planetary motions were constructed. He ordered two degree-measurements to be made to determine the size of the earth one of them near Tadmor (a degree = 6‚500 miles) hence circumference
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Earth to the Sun Centrifugal force - the tendency of rotating object to flee from the center of their rotation Obliquity - tilt of a planet’s axis Ecliptic - a plane in space defined by Earth’s orbit around the Sun; plane by which the orbit of all other planets in the solar system are compared Inclination - angle between plane of orbit and ecliptic plane Transit - passing of object in front of star‚ transit of planets can only occur on line of nodes; transit of Venus will occur next year and will
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the time. Sun: But they obviously gave some considerance to the Sun. They not only noted down equinoxes and solstices but Zenial passages as well. They also had a god who symbolized the Sun during a Zenial passage called the Diving God. And the Ecliptic‚ the path the Sun follows in the sky‚ was depicted by a double-headed serpent. Also‚ to signal the changing of season‚ a ball game was played that re-enacted the Sun’s orbit around the Earth. Earth: The Earth was believed to be
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following best describes the origin of ocean tides on Earth? | | | | | | | | The Moon’s gravity pulls harder on water than on land‚ because water is less dense than rock. | | | Tides are caused by the 23 1/2° tilt of the earth’s rotational axis to the ecliptic plane. | | | Tides are caused primarily by the gravitational force of the Sun. | | | Tides are caused by the difference in the force of gravity exerted by the Moon across the sphere of the earth. | | | Tides are caused on the side of
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CH 2 -According to Aristotle‚ larger‚ heavier objects were supposed to fall to the ground faster than smaller‚ lighter objects. Galileo performed a number of experiments to Aristotle’s pronouncements‚ that two objects of different weight dropped from the same height fall down at exactly the same rate. -Copernicus published his findings in 1543‚ the same years as his death‚ in a text entitled (On the Revolutions of the Celestial Spheres). -Heliocentric theory was proposed by Aristarchus of Samos
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Observable phenomena related to the moon: - phases of the moon: depending on the Moon�s position relative to the Sun‚ we see different parts of the illuminated Moon. - the month:� Moon changes through a complete cycle of phases in about 29.5 days - eclipses To understand these phenomena‚ we have to change our perspective and think about the Moon�s orbit. Some properties of the Moon: Radius 356‚000 km 407‚000 km 15% change from max to
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enjoyable for me‚ a sense of diversion is created making the viewers more indulge in the movie all the way to the ending. The plots are usually twisted‚ climatic‚ suspenseful and intelligence is often use far as the writing perspective to result in an ecliptic viewing of the movie. A really great thriller will usually bring a shock factor by the climax‚ then the movie will receive a better understanding from the beginning to end. Another genre of films I enjoy are Musicals they are fashionable and express
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As seen from Earth: * Orbital period of 88 days; rotation to orbit is a 3:2 ratio * Distance from Sun: 0.31 AU to 0.46 AU from the Sun * Eccentric orbit: close and far away (perihelion and aphelion) * 7 percent to the ecliptic * Visible by the naked eye just before sunrise or just after sunset (when the Sun’s light is blotted out) * Never far from the Sun * As a physical body: * Small (about 0.055 Earth’s mass) * No permanent atmosphere;
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Aboriginal The Aboriginal explanation of the night sky involved stories from the dream time to teach them about weather‚ location of types of food‚ and the behavioural codes of their kind. For though many stories could be passed down‚ the night sky was used as a record of past events. The Aboriginal people had depended upon a culture of song dance and ritual for about 40 thousand years‚ though the stars intrigued the Aboriginals as a form of explanation. Aboriginal knowledge of the night sky was
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