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The Solar System
The Solar System

... • A solar system consists of a star and objects that revolve around it. • Our Solar System consists of the Sun and eight known planets and the moons that orbit those planets. • The force of gravity keeps planets in orbit around the sun. ...
Henry6SCI (H6SCIASTRO)
Henry6SCI (H6SCIASTRO)

Unit 3 - Section 8.9 2011 Celestrial Objects from Earth
Unit 3 - Section 8.9 2011 Celestrial Objects from Earth

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antarctic and associated exploration book collection

... Cape of Good Hope Observatory, measured a parallax of 1.16'' for  Centauri - corresponding to a distance of 2.8LY (compared with an actual parallax of 0.74'' and distance of 4.4LY). At last, by the mid-19th century, astronomers had proved the validity of the parallax method of distance measurement, ...
CopernicanRev1
CopernicanRev1

...  About perfection from Plato’s Phaedo : The instance taken there is the mathematical relation of equality, and the contrast is drawn between the absolute equality we think of in mathematics and the rough, approximate equality which is what we have to be content with in dealing with objects with our ...
Solar System by Halfs
Solar System by Halfs

... 1. Examine the data above, your measures (in cm), the Actual distances in AU to the planets, and Bode’s Law predictions. How close are Bode’s Law predictions and your measurements to the ACTUAL AU distance? Hint: look at the ratios, not the actual measures. That is, Jupiter is 5.2 times as far as Ea ...
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... four “stars” orbiting Jupiter. ...
Parallax, Event Horizon, HR diagrams equation
Parallax, Event Horizon, HR diagrams equation

... Physics : distance to the stars and counting the stars "1 Light Year is the distance traveled by light in one year." 1 light year (ly) is equivalent to: 63,270 AU Closer stars could appear larger. More distant stars could be very large, but seem small. How can we tell which stars are farther away? ...
Astronomy 212 EXAM 1 2000 September 29 Answer
Astronomy 212 EXAM 1 2000 September 29 Answer

... spins a bit faster on its axis. 17. According to Kepler’s third law, if planet A takes 10 years to orbit the Sun and planet B takes 20 years to orbit the Sun then planet B is twice as far from the Sun as planet A. 18. Newton’s second law states that the speed of an object is proportional to the forc ...
Review Powerpoint - Physics and Astronomy
Review Powerpoint - Physics and Astronomy

... Massive objects actually orbit around their common center of mass; if one object is much more massive than the other, the center of mass is not far from the center of the more massive object. For objects more equal in mass, the center of mass is between the two. ...
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Universal Gravitation

... force of gravity, so it always moves at a constant speed  The time it takes for a satellite to complete one orbit is called the period.  Not all satellites follow a circular orbit. Some will travel along an oval path called an ellipse. ...
Our Solar System
Our Solar System

... Our solar system is made up of:  Sun – Star in the center of a solar system.  Nine planets  Their moons – a natural satellite that orbits a primary planet.  Asteroids ...
Light of the Sun - Beck-Shop
Light of the Sun - Beck-Shop

... and orbital distances of the planets. For more than a century, the distances of Venus and Mars were determined by triangulation from different points on the Earth. It involved measurements of the parallax, or angular difference in the apparent direction of the planet, as observed from widely separat ...
Chapter 27 Stars and Galaxies
Chapter 27 Stars and Galaxies

... Distance to Stars Parallax: method used to determine the distance to stars – Because the earth is moving the star appears to shift in the sky depending on the time of year – The closer the star is to the earth the greater the shift – Astronomers use a photo to determine the shift (photographed twic ...
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... was finally observed, it proved that the Ptolemaic model was wrong. (c) The Copernican model also made predictions about relative distances of the then known planets from the Sun; these predictions were (much) later confirmed. 3. Simplicity: Mercury and Venus (a) Copernicus liked his model because i ...
8.1 Touring the Night Sky Pg. 308 #1
8.1 Touring the Night Sky Pg. 308 #1

... that planets like Jupiter and Saturn are often called gas giants because they are mostly made of gas, like stars. The only thing keeping them from actually being stars is their mass. If Jupiter was 80x bigger, then it could be classified as a star. Another similarity between the two is that stars ac ...
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Test 1 - History of Astronomy and Planetary Motion - ppt

... Why is the sun at the center of the solar system? Densest object in the solar system ...
Star - University of Pittsburgh
Star - University of Pittsburgh

... Objects feel the effects of this curvature, like something pulling on all the parts of our body, causing it to follow the most natural curved path in space. When gravity is extremely strong, Einstein's theory is more accurate than Newton's theory. A change in the distribution of matter creates a dis ...
Introduction - Nipissing University Word
Introduction - Nipissing University Word

... In physics, the standard unit of energy is called the Joule (symbol J), a unit which is derived from the standard properties. Use Einstein’s famous equation relating mass and energy, E  mc 2 (where E is energy, m is mass and c is the speed of light), to determine the total energy in Joules associat ...
NAME ______ PERIOD ______ DATE_________ OGT Practice
NAME ______ PERIOD ______ DATE_________ OGT Practice

Word, 160 k
Word, 160 k

... objective because all larger distances in the Universe are determined step-by-step starting from it. For example, the distances from the Sun to the planets of the Solar System are expressed as multiples or functions of the Earth-Sun distance. Moreover, the distances to the nearest stars are found us ...
Weight Around the Solar System
Weight Around the Solar System

... the same thing, but they don’t. Mass is a measurement of the amount of matter that an object contains, while weight is a measurement of the pull of gravity upon an object. Unlike mass, which doesn’t change, an object’s weight can change depending on its location. For example, on the moon you would w ...
Earth in space
Earth in space

... ellipse is a closed curve that ranges in shape from a perfect circle to a straight line. Eccentricity is a measure of the “out-of-roundness” of an ...
Our Universe - Etiwanda E
Our Universe - Etiwanda E

...  What happens to comets after they pass the sun several times?  Most asteroids are between the orbits of what two planets? ...
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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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