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### PtyS206_L1_Intro

Course: PTYS 206, Fall 2008
School: Arizona
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SCALE INTRODUCTION, OF THE UNIVERSE January 13, 2005 Prologue, Pages 117 Tuesday: Chapter 1, Pages 1829 I. Background Information: Powers of Ten 1. Distance 1 km = 1000 m = 0.62 miles 1 AU = 1.5 X 108 km = 150,000,000 km = 93,000,000 (9.3 X 107) miles (1 Astronomical 1 Ly = 9.46 X 1012 km = 63,000 AU (1 Lightyear) pc 1 = 3.26 Ly = 3.08 X 1013 km = 206,000 AU (1 Parsec) 2. Mass 1 kg = 2.21 lbs on Earth (1 kilogram)...

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SCALE INTRODUCTION, OF THE UNIVERSE January 13, 2005 Prologue, Pages 117 Tuesday: Chapter 1, Pages 1829 I. Background Information: Powers of Ten 1. Distance 1 km = 1000 m = 0.62 miles 1 AU = 1.5 X 108 km = 150,000,000 km = 93,000,000 (9.3 X 107) miles (1 Astronomical 1 Ly = 9.46 X 1012 km = 63,000 AU (1 Lightyear) pc 1 = 3.26 Ly = 3.08 X 1013 km = 206,000 AU (1 Parsec) 2. Mass 1 kg = 2.21 lbs on Earth (1 kilogram) 1 MSun = 1.99 X 1030 kg (mass of Sun) 1 MEarth = 6 X 1024 kg (mass of Earth) 3. Temper...

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