Astronomy Outline Essay

2318 Words Feb 17th, 2013 10 Pages
University of Phoenix Material

Basics of Astronomy Outline

Complete the outline following the instructions above. Use the example as a guide, using complete sentences for all subpoints.

1. Our place in the universe
a. The modern view of the universe
1) What is our Sun and what is its role in the solar system?
a) The sun is the closest star to earth and makes up 98% of the solar system mass.
b) The sun is made up of the hydrogen, helium, calcium, sodium, magnesium, and iron elements.
c) The sun provides light, heat, and energy to the Earth.
2) What is our Milky Way galaxy and the sun’s position in it?
a) The Milky Way is an island of hundreds of billions of stars, gas, and dust held together by gravity to form a disk
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b) The Alt Azimuth Method does not use the patterns of the stars in the sky at all, but a grid reference or latitude and longitude references are used.
c) The Celestial Method is much like the Alt Azimuth Method but is achieved by using an equatorial mounting. The difference between an equatorial and an Alt Azimuth mounting is that the equatorial rather than having its rotation bearing level. This allows the telescope tube to rotate around the same axis as the Earth's axis.
2) Why are there different brightness of stars and how do we describe their brightness as compared to one another?
a) Apparent magnitude refers to value of the magnitude depending on both how close the star is and how much energy it is emitting.
b) Parallax is the shifting location of nearby objects compared to more distance objects when you change your viewpoint the biggest scale of this is the orbit of Earth.
3) What are constellations?
a) A constellation is a region of the sky with well-defined borders; the familiar patterns of stars merely help us locate the constellations.
4) What is Polaris and what is its significance in the sky?
a) Polaris is a star with an extreme luminosity and is also referred to as the North Star.
b) Polaris is special not because of its brightness, but because it is so close to the north celestial pole and therefore very useful in navigation.
5) Why does

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