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Astronomy 101: Intro to Astronomy

Course Summary

Study this Astronomy 101 course to learn or review foundational astronomy concepts. This mobile-friendly course offers lessons, quizzes and other resources that can supplement your study materials for school or strengthen your knowledge and skills to enhance your performance on the job.
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19 Chapters in Astronomy 101: Intro to Astronomy

19 chapters in Astronomy 101: Intro to Astronomy

Ch 1. The Historical Background of Astronomy {{cp.topicAssetIdToProgress[459839].percentComplete}}% complete
Course Progress Best Score
Lesson 1 - The Horizon Coordinate System Score: {{cp.lessonAssetIdToProgress[31228].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31228].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Equatorial Coordinate System Score: {{cp.lessonAssetIdToProgress[31229].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31229].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Important Points on the Celestial Sphere Score: {{cp.lessonAssetIdToProgress[31227].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31227].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Cycle of the Seasons in Astronomy Score: {{cp.lessonAssetIdToProgress[32545].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32545].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Planets of the Solar System: Orbits & Visibility Score: {{cp.lessonAssetIdToProgress[35730].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35730].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - What is Precession? Score: {{cp.lessonAssetIdToProgress[31231].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31231].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Measuring Objects in the Sky: Angular Size & Distance Score: {{cp.lessonAssetIdToProgress[30366].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30366].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Lunar Eclipse: Definition & Types Score: {{cp.lessonAssetIdToProgress[31124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31124].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - What Is a Solar Eclipse? Score: {{cp.lessonAssetIdToProgress[31125].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31125].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Formation of the Earth: Theories Score: {{cp.lessonAssetIdToProgress[2964].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2964].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Four Spheres of Earth: Geosphere, Hydrosphere, Biosphere, and Atmosphere Score: {{cp.lessonAssetIdToProgress[13471].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[13471].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Structure of the Atmosphere Score: {{cp.lessonAssetIdToProgress[12473].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[12473].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Formation of the Moon: Theories Score: {{cp.lessonAssetIdToProgress[2965].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2965].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Lunar Geology: Types of Moon Rocks Score: {{cp.lessonAssetIdToProgress[30369].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30369].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Moon's Atmosphere Score: {{cp.lessonAssetIdToProgress[30370].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30370].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Moon Phases: Names & Sequence Score: {{cp.lessonAssetIdToProgress[31122].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31122].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - How Earth & the Sun Affect the Phases of the Moon Score: {{cp.lessonAssetIdToProgress[31121].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31121].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Motion of the Moon: Sidereal Month vs. Synodic Month Score: {{cp.lessonAssetIdToProgress[31123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31123].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Predicting When The Moon Will Rise and Set Score: {{cp.lessonAssetIdToProgress[30372].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30372].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Solar System Overview Score: {{cp.lessonAssetIdToProgress[29079].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29079].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Solar Nebula Theory: Formation of the Solar System Score: {{cp.lessonAssetIdToProgress[29080].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29080].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Solar Nebula Theory & Patterns of Planetary Motion Score: {{cp.lessonAssetIdToProgress[29085].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29085].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What is the Age of the Solar System? Score: {{cp.lessonAssetIdToProgress[29081].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29081].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Condensation Sequences & Planetary Formation Score: {{cp.lessonAssetIdToProgress[29645].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29645].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - What Are Planetesimals? Score: {{cp.lessonAssetIdToProgress[29650].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29650].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - How Do Protoplanets Grow? Score: {{cp.lessonAssetIdToProgress[29647].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29647].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Is the Jovian Problem? Score: {{cp.lessonAssetIdToProgress[29648].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29648].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Major Characteristics of Planets in the Solar System Score: {{cp.lessonAssetIdToProgress[29084].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29084].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Theoretical vs. Actual Temperature in our Solar System Score: {{cp.lessonAssetIdToProgress[32374].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32374].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Planetary Geology: The Study of Celestial Bodies Score: {{cp.lessonAssetIdToProgress[17922].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17922].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Satellite Formation in Our Solar System Score: {{cp.lessonAssetIdToProgress[29945].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29945].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Moons of the Jovian Planets Score: {{cp.lessonAssetIdToProgress[29099].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29099].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Tidal Forces & Heat Transfer on Jovian Satellites Score: {{cp.lessonAssetIdToProgress[29975].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29975].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Meteoroids: Origin & Orbits Score: {{cp.lessonAssetIdToProgress[30146].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30146].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Meteorite Classifications & Characteristics Score: {{cp.lessonAssetIdToProgress[30145].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30145].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Asteroids: Origin & Properties Score: {{cp.lessonAssetIdToProgress[30147].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30147].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Comets: Origin & Properties Score: {{cp.lessonAssetIdToProgress[30148].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30148].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Are Trans-Neptunian Objects? Score: {{cp.lessonAssetIdToProgress[30144].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30144].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Dwarf Planets of the Solar System: Pluto, Eris, Haumea & Ceres Score: {{cp.lessonAssetIdToProgress[2968].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2968].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Structure of the Sun Score: {{cp.lessonAssetIdToProgress[3200].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3200].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Sun: Atmosphere & Facts Score: {{cp.lessonAssetIdToProgress[31432].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31432].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Photosphere: Definition & Features Score: {{cp.lessonAssetIdToProgress[32176].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32176].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Chromosphere: Definition & Properties Score: {{cp.lessonAssetIdToProgress[32177].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32177].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Solar Corona & Solar Wind Score: {{cp.lessonAssetIdToProgress[32178].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32178].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Solar Flares, Solar Prominences & Coronal Mass Ejections Score: {{cp.lessonAssetIdToProgress[32377].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32377].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Helioseismology & the Heliosphere Score: {{cp.lessonAssetIdToProgress[32179].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32179].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Are Sunspots? Score: {{cp.lessonAssetIdToProgress[32180].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32180].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Why Do Sunspots Occur? Score: {{cp.lessonAssetIdToProgress[32181].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32181].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Babcock Model of the Sun's Magnetic Cycle Score: {{cp.lessonAssetIdToProgress[32182].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32182].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Stages of the Sun's Life Cycle Score: {{cp.lessonAssetIdToProgress[2959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2959].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Types of Stars by Size, Color and Life Cycle Score: {{cp.lessonAssetIdToProgress[2958].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2958].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is a Main Sequence Star? Score: {{cp.lessonAssetIdToProgress[20934].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20934].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Types of Star Clusters Score: {{cp.lessonAssetIdToProgress[20935].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20935].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What Are Binary Stars? Score: {{cp.lessonAssetIdToProgress[21492].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21492].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Planets Around Distant Stars Score: {{cp.lessonAssetIdToProgress[29103].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29103].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Constellations: Definition & Name Origins Score: {{cp.lessonAssetIdToProgress[19967].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19967].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Zodiac Constellations & Their Visibility in the Sky Score: {{cp.lessonAssetIdToProgress[19969].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19969].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Star Formation: Main Sequence, Dwarf & Giant Stars Score: {{cp.lessonAssetIdToProgress[2955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2955].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What is the Interstellar Medium? Score: {{cp.lessonAssetIdToProgress[20948].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20948].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Emission, Dark, and Reflection Nebulae Score: {{cp.lessonAssetIdToProgress[21694].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21694].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Young Stellar Objects and Protostellar Disks Score: {{cp.lessonAssetIdToProgress[20950].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20950].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Nuclear Fusion & Star Formation Score: {{cp.lessonAssetIdToProgress[20951].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20951].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Forces Keeping Stars in a Stable Equilibrium Score: {{cp.lessonAssetIdToProgress[20946].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20946].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Giant Stars and Helium Fusion Score: {{cp.lessonAssetIdToProgress[21693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21693].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - How Lower-Main-Sequence Stars Die Score: {{cp.lessonAssetIdToProgress[20955].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20955].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - What Are Planetary Nebulae? Score: {{cp.lessonAssetIdToProgress[21695].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21695].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Red Giant, Horizontal & Asymptotic Giant Branch Stars Score: {{cp.lessonAssetIdToProgress[35738].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35738].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - What Are White Dwarfs? - Stellar Remnant Characteristics Score: {{cp.lessonAssetIdToProgress[20952].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20952].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Supernova: How Massive Stars Explode Score: {{cp.lessonAssetIdToProgress[26045].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26045].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Different Types of Supernovae Score: {{cp.lessonAssetIdToProgress[26046].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26046].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - What are Neutron Stars and Supernova Remnants? Score: {{cp.lessonAssetIdToProgress[26300].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26300].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - What Are Pulsars? Score: {{cp.lessonAssetIdToProgress[20959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20959].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Black Holes: Escape Velocity and the Singularity Score: {{cp.lessonAssetIdToProgress[26441].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26441].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - The Origin of Gamma-ray Bursts Score: {{cp.lessonAssetIdToProgress[20961].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20961].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - Cosmic Recycling: From Stellar Death to Human Life Score: {{cp.lessonAssetIdToProgress[26463].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26463].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Cosmic Rays: Definition & Origin Score: {{cp.lessonAssetIdToProgress[35740].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35740].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Formation of the Milky Way Galaxy Score: {{cp.lessonAssetIdToProgress[27124].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27124].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - How Our Galaxy Was Discovered Score: {{cp.lessonAssetIdToProgress[35741].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35741].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - The Structure of Our Galaxy Score: {{cp.lessonAssetIdToProgress[26454].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26454].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Nucleus of a Galaxy Score: {{cp.lessonAssetIdToProgress[26456].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26456].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - The Spiral Arms of the Milky Way Galaxy Score: {{cp.lessonAssetIdToProgress[27040].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27040].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Population I and Population II Stars Score: {{cp.lessonAssetIdToProgress[27123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27123].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Mass of Our Galaxy Score: {{cp.lessonAssetIdToProgress[26873].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26873].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - The Collision & Assembly of Galaxies Score: {{cp.lessonAssetIdToProgress[27693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27693].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - The Distribution of Galaxy Properties Along the Hubble Tuning Fork Score: {{cp.lessonAssetIdToProgress[26459].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26459].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Types of Spiral Galaxies Score: {{cp.lessonAssetIdToProgress[26457].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26457].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Galaxy Collisions: Ring & Elliptical Galaxies Score: {{cp.lessonAssetIdToProgress[35743].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35743].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Links in the Cosmic Distance Ladder Score: {{cp.lessonAssetIdToProgress[26465].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26465].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Hubble's Law & Hubble's Constant Score: {{cp.lessonAssetIdToProgress[26467].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26467].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - Measuring the Properties of Distant Galaxies Score: {{cp.lessonAssetIdToProgress[27583].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27583].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Characteristics of Stars' Orbits in the Galaxy Score: {{cp.lessonAssetIdToProgress[26460].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26460].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Dark Matter & Gravitational Lensing Score: {{cp.lessonAssetIdToProgress[27917].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27917].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - What Are the Different Types of Galaxy Clusters? Score: {{cp.lessonAssetIdToProgress[27692].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27692].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - What are Active Galactic Nuclei? Score: {{cp.lessonAssetIdToProgress[27893].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27893].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - Seyfert Galaxies & Double-Lobed Radio Galaxies Score: {{cp.lessonAssetIdToProgress[35744].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35744].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - What Are Quasars? Score: {{cp.lessonAssetIdToProgress[27694].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[27694].bestScoreQuestions}}  Take Quiz Optional
Lesson 14 - What Are Supermassive Black Holes? Score: {{cp.lessonAssetIdToProgress[26470].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26470].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Origins of the Universe: The Big Bang and Expanding & Contracting Universes Score: {{cp.lessonAssetIdToProgress[2953].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2953].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion Score: {{cp.lessonAssetIdToProgress[2954].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2954].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Olbers' Paradox & Cosmic Expansion: Nature of the Universe Score: {{cp.lessonAssetIdToProgress[28123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28123].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - The Observable Universe vs. the Entire Universe Score: {{cp.lessonAssetIdToProgress[28128].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28128].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Photons, Particle Soup & Nucleosynthesis Score: {{cp.lessonAssetIdToProgress[28122].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28122].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - The Evolution of the Early Universe Score: {{cp.lessonAssetIdToProgress[28180].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28180].bestScoreQuestions}}  Take Quiz Optional
Lesson 7 - The Cosmological Principle Score: {{cp.lessonAssetIdToProgress[26468].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26468].bestScoreQuestions}}  Take Quiz Optional
Lesson 8 - Three Models of the Universe: Flat, Open & Closed Score: {{cp.lessonAssetIdToProgress[28133].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28133].bestScoreQuestions}}  Take Quiz Optional
Lesson 9 - Hot & Cold Dark Matter & WIMPs Score: {{cp.lessonAssetIdToProgress[28134].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28134].bestScoreQuestions}}  Take Quiz Optional
Lesson 10 - Cosmic Inflation: Solving the Flatness & Horizon Problems Score: {{cp.lessonAssetIdToProgress[28708].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28708].bestScoreQuestions}}  Take Quiz Optional
Lesson 11 - The Acceleration of the Universe Score: {{cp.lessonAssetIdToProgress[28709].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28709].bestScoreQuestions}}  Take Quiz Optional
Lesson 12 - The Universe's Curvature, Age & Fate Score: {{cp.lessonAssetIdToProgress[28136].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28136].bestScoreQuestions}}  Take Quiz Optional
Lesson 13 - How To Calculate the Age of the Universe Score: {{cp.lessonAssetIdToProgress[28121].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28121].bestScoreQuestions}}  Take Quiz Optional
Course Progress Best Score
Lesson 1 - Classical Relativity: Distance and Time Relation to the Observer Score: {{cp.lessonAssetIdToProgress[3229].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3229].bestScoreQuestions}}  Take Quiz Optional
Lesson 2 - General and Special Relativity: Theory and Examples Score: {{cp.lessonAssetIdToProgress[3234].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3234].bestScoreQuestions}}  Take Quiz Optional
Lesson 3 - Light and Relativity: Breakdown of Classical Relativity with Light Example Score: {{cp.lessonAssetIdToProgress[3230].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3230].bestScoreQuestions}}  Take Quiz Optional
Lesson 4 - Time Dilation: Description, Explanation & Examples Score: {{cp.lessonAssetIdToProgress[3231].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3231].bestScoreQuestions}}  Take Quiz Optional
Lesson 5 - Space Contraction: Shortening Distance for Fast Moving Objects Score: {{cp.lessonAssetIdToProgress[3232].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3232].bestScoreQuestions}}  Take Quiz Optional
Lesson 6 - Mass and Energy: Description and Interchangeable Relationship Score: {{cp.lessonAssetIdToProgress[3233].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3233].bestScoreQuestions}}  Take Quiz Optional

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