Written Assignment #6

Written Assignment #6 - Jason Mallette 1/15/2011 Astronomy...

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Jason Mallette 1/15/2011 Astronomy Written Assignment #6 1. Briefly relate several possible courses for the future of the universe and the kinds of observation that would be necessary to resolve the issue. The core of our solar system is the Sun, which is a star. It burns its nuclear fuel relatively slowly, which makes it a low mass star. Hydrogen atoms are fusing to form helium in the core of the Sun. The solar materials are pushed outwards by the energy released by this reaction. The radiation will eventually make its way to the surface and fly into space mostly as visible light. The Sun will convert almost all of the hydrogen that in its core in the next six billion years. The helium will eventually start to fuse together to form carbon. This will take place at a higher temperatures and pressures than hydrogen fusion and release more energy. The outer layers of the Sun will be pushed farther away from their current position by the extra energy generated in the core. The outermost layers of the Sun’s atmosphere will cool down from their current temperature of 5700 degrees Kelvin to about 4000 degree Kelvin as they are pushed outwards. Eventually the Sun will swell up into a red giant and become cooler and redder. During this phase the Sun’s radius will grow very large. The outer layers of the Sun will engulf Mercury and possibly Venus and Earth. 2. Outline the stellar nebula theory, and explain how the characteristic properties of the solar system provide evidence that supports that theory.
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The solar nebula theory is a model used to explain the formation and evolution of our solar system. Originally it was only applied to our solar system, but this method is now thought to hold true throughout the universe. The Solar Nebular Disk Model is the most accepted modern variant. According to this model stars form in massive, dense
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This note was uploaded on 07/15/2011 for the course AST 101 taught by Professor Staff during the Spring '10 term at Edison State College.

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Written Assignment #6 - Jason Mallette 1/15/2011 Astronomy...

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