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Astronomy Notes # 1

by: Lindsey Notetaker

Astronomy Notes # 1 Astronomy 104

Lindsey Notetaker

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About this Document

This covers the first day of discussion.
Astronomy/Solar System
Jason Boyles
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Lindsey Notetaker on Tuesday February 9, 2016. The Class Notes belongs to Astronomy 104 at Western Kentucky University taught by Jason Boyles in Spring 2016. Since its upload, it has received 12 views.


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Date Created: 02/09/16
FEBRUARY 1, 2016 Astronomy Notes Comparing Human/Astronomical Time Scale  To us, 100 years is a long time, but it’s a blink in the eye of the galaxy.  The scientific Revolution happened during the renaissance. Technology  We lack the technology to match our knowledge. (Example: Think of the gadgets in the show Star Trek or Star Wars. They were imagined years ago in the media, but we yet to have the technology displayed in them.) Earth’s Galactic Dance  Earth’s motion changes what we see in the night sky.  We see sunrise and sunset because of Earth’s orbit.  The sun and stars rise in the East.  The Earth rotates from West to East.  Ecliptic Plane- Imaginary plane created from the Earth and the Sun.  Earth’s axis remains pointed in the same direction. distancetraveled Earth sOrbit Speed= timeel lapsed ¿Earth sOrbitalPeriod FEBRUARY 1, 2016 2x3.14159x 93,000,00)  ¿ 8,766hours  Answer = 66,600 miles per hour.  Stars in the local neighborhood move randomly relative to one another. Universe Expansion (“Bread” Analogy)  Imagine an uncooked loaf of bread with raisins in it. The bread itself is the universe, and the raisins the galaxies within it.  Before “baking” (or the extension of time over a span), the raisins, or galaxies are relatively close. However, during the baking period, the bread expands, causing the distance in the raisins to grow. Extra:  Earth rotates at its axis.  Earth orbits around the sun.  The Milky Way Galaxy rotates, carrying our sun around the center.  Meaning: We are experiencing a LOT of motion, which we are entirely unaware of.


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