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The Motions of the Planets
The Motions of the Planets

... • Recognized as the driving force behind the acceptance of the heliocentric theory • The realization toward the end of the sixteenth century that Earth is not at the center of the Universe is referred to as the Copernican Revolution. • Copernicus' picture is much simpler – The Earth behaves in much ...
Class 1: From Astrology to Astronomy
Class 1: From Astrology to Astronomy

... • A few ancient scholars, however, came up with the idea that the Sun, not the Earth was the center of the solar system (Such as Aryabhata a 5th century Indian astronomer). • A planetary system with the sun in the center is known as a heliocentric system. • From the Greek word Helios, which means “S ...
A PowerPoint on Lunar Grazing Occultations
A PowerPoint on Lunar Grazing Occultations

... rate. The exact timings of D’s and R’s depends on your position in space, which depends on how the Earth is rotating. It changes gradually due to… • --- tidal friction with the moon, • --- tidal friction with the sun, • --- massive Earthquakes can change the rotational moment of inertia of the Earth ...
Chapter 39
Chapter 39

... • Whole cycle takes about 29.5 days ...
Dynamics of the Earth
Dynamics of the Earth

... Historically, a day is a time interval between successive upper transits of a given celestial reference point. upper transit – the passage of a body across the celestial meridian moving westward hour angle – the westward angular distance of an object from the meridian; negative if object is east of ...
14. Galileo and the Telescope.
14. Galileo and the Telescope.

... "When the moon is not far from the sun..its globe offers itself to view not only on the side where it is adorned with shininghorns, but a certain light is also seen to mark out the periphery of the dark part which faces away from the sun.. If this kind of light were the moon's own, or were contribut ...
Newton`s Laws Powerpoint
Newton`s Laws Powerpoint

... For example… ...
Unit 5B Universal Gravitation
Unit 5B Universal Gravitation

... motion of the inferior (inner) planets • Strongly opposed by Catholic church which supported Ptolemaic system of the Universe ...
Seasons
Seasons

... b. The apparent center of the arcs is Polaris (north star) WHY? i. Since Polaris is located above the Earth’s axis of rotation, the stars and planets seem to rotate counterclockwise around Polaris at approximately 15o per hour. WHY 15o per hour? ii. The apparent daily motion of stars, moon, and pla ...
The Copernican revolution
The Copernican revolution

... and any group of stars ect. Describe your observations. You can observe that there are several small and unusually bright starlike that do not keep pace with stars. These objects are called planets. The moon and the sun also move at a different pace from the stars. From such observations, most peopl ...
Chapter 6
Chapter 6

... When moving in an ellipse, a satellite's speed is A. Largest when it is closest to the sun B. Largest when it is furthest from the sun C. Equal during the entire orbit ...
Outer Space
Outer Space

... suits. The Moon has no air or water. Plants and animals can’t live there either. Astronauts first landed on the Moon in 1969. After that, there were six more trips to the Moon. They brought back Moon rocks, which scientists are still studying. There are holes, or craters, all over the Moon’s surface ...
Three hundred sextillion stars
Three hundred sextillion stars

... before midnight. By April it’s rising at 9 pm, and by the end of the month its rising time is 7:30 pm.  Saturn recently spent about three years in Virgo.  It’s now in Libra, where it will stay throughout 2014. Venus rises in the dawn two hours before the sun. She holds her morning-star position thro ...
The Egyptians through the Romans
The Egyptians through the Romans

... of the heavens, like a geometrical center; …[that the earth] in magnitude and distance, has the ratio of a point with respect to the sphere of the fixed stars, having itself no local motion at all. ...
Foundation 1 - Discovering Astronomy
Foundation 1 - Discovering Astronomy

... How many zodiac constellations are there? When, if ever, is the Moon visible during the daytime? • Does the Moon have a dark side that we never see from Earth? ...
Are constellations just mythic figures in the sky?
Are constellations just mythic figures in the sky?

... How many zodiac constellations are there? When, if ever, is the Moon visible during the daytime? • Does the Moon have a dark side that we never see from Earth? ...
Earth, Sun and Moon Test Study Guide
Earth, Sun and Moon Test Study Guide

... 2. How did Earth obtain its moon? Giant impact theory descirbes that a large body struck the early Earth. The debris from the crash formed the moon. The moon is composed of material from both the Earth and the other body. 3. Define Revolution The movement of a body around another body. The moon revo ...
History of Astronomy
History of Astronomy

... the Universe extends well beyond our own galaxy. • showed that these other galaxies were moving away at speeds proportional to their distances away form us. ...
Moon Presentation storyboard
Moon Presentation storyboard

... Note: Slides could be added to this slide show storyboard template, but a short and powerful message is likely to be the most effective. Look at the sample presentation in the Module 3 Activity 1 folder on the CD. ...
STONEHENGE
STONEHENGE

... The major causeway opening to the north-east embraces the direction of the most northerly risings of both moon and sun. Not until about 2550 BCE did construction of a ring of stones commence. There being no natural stone on this part of the chalk plain, the stones had to be imported. WHENCE? The fir ...
Astronomy and Humanism by Ray Thompson A. EARLY
Astronomy and Humanism by Ray Thompson A. EARLY

... position of the sun at noon at two places on a north/south line he came up with a value within 1% of the true one! Then Hipparchus (160-127BC?) calculated that the moon's distance was 29 1/2 times the earth's diameter. The true value is 30 times. Finally we come to Ptolemy, who lived in the second c ...
Evidence #1: Earth`s average density is higher than the Moon`s. The
Evidence #1: Earth`s average density is higher than the Moon`s. The

... (Earth’s orbital plane around the Sun). This means that sometimes the Moon is a little above the ecliptic and other times it is a little below the ecliptic. The figure above shows the ecliptic and the tilt of the Moon’s orbital plane. ...
Slide 1
Slide 1

... Tides are caused by the sun and moons gravitational pull, When the sun and moon are aligned, there are exceptionally strong gravitational forces, causing very high and very low tides which are called spring tides, though they have nothing to do with the season. When the sun and moon are not aligned, ...
Dr. Huerta SCALES MLS 603 • 1 mile = 1.6 kilometers • speed of
Dr. Huerta SCALES MLS 603 • 1 mile = 1.6 kilometers • speed of

... Dr. Huerta ...
Space studies
Space studies

... is an inferior planet from Earth, it never appears to venture far from the Sun: its elongation reaches a maximum of 47.8°. Venus reaches its maximum brightness shortly before sunrise or shortly after sunset, for which reason it has been referred to by ancient cultures as the Morning Star or Evening ...
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Lunar theory

Lunar theory attempts to account for the motions of the Moon. There are many irregularities (or perturbations) in the Moon's motion, and many attempts have been made to account for them. After centuries of being problematic, lunar motion is now modeled to a very high degree of accuracy (see section Modern developments).Lunar theory includes: the background of general theory; including mathematical techniques used to analyze the Moon's motion and to generate formulae and algorithms for predicting its movements; and also quantitative formulae, algorithms, and geometrical diagrams that may be used to compute the Moon's position for a given time; often by the help of tables based on the algorithms.Lunar theory has a history of over 2000 years of investigation. Its more modern developments have been used over the last three centuries for fundamental scientific and technological purposes, and are still being used in that way.
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