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Course Summary

Astronomy 101 has been evaluated and recommended for 3 semester hours and may be transferred to over 2,000 colleges and universities. With this self-paced course, you get engaging lessons, expert instructors who make even the most challenging astronomy topics simple, and an excellent resource for getting a head start on your degree.

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19 Chapters in Astronomy 101: Intro to Astronomy

1. The Historical Background of Astronomy ({{ cp.topicAssetIdToProgress[459839].percentComplete }}%)

2. The Basics of Astronomy ({{ cp.topicAssetIdToProgress[459843].percentComplete }}%)

3. The Physics of Astronomy ({{ cp.topicAssetIdToProgress[459845].percentComplete }}%)

4. Understanding Orbits in Astronomy ({{ cp.topicAssetIdToProgress[459847].percentComplete }}%)

5. The Earth-Moon System ({{ cp.topicAssetIdToProgress[459849].percentComplete }}%)

6. The Solar System ({{ cp.topicAssetIdToProgress[459851].percentComplete }}%)

7. The Inner Solar System ({{ cp.topicAssetIdToProgress[459853].percentComplete }}%)

8. Gaseous Planets in the Solar System ({{ cp.topicAssetIdToProgress[459855].percentComplete }}%)

9. Comets, Moons & Asteroids ({{ cp.topicAssetIdToProgress[459857].percentComplete }}%)

10. Understanding the Science of the Sun ({{ cp.topicAssetIdToProgress[459859].percentComplete }}%)

11. Types of Stars in the Universe ({{ cp.topicAssetIdToProgress[459861].percentComplete }}%)

12. Formation & Evolution of Stars ({{ cp.topicAssetIdToProgress[459863].percentComplete }}%)

13. Stellar Death & Remnants ({{ cp.topicAssetIdToProgress[459865].percentComplete }}%)

14. Formation & Structure of the Milky Way ({{ cp.topicAssetIdToProgress[459867].percentComplete }}%)

15. Properties & Characteristics of Galaxies ({{ cp.topicAssetIdToProgress[459869].percentComplete }}%)

16. Cosmology Overview ({{ cp.topicAssetIdToProgress[459871].percentComplete }}%)

17. Relativity in Space & Time ({{ cp.topicAssetIdToProgress[459873].percentComplete }}%)

18. Overview of Life in the Universe ({{ cp.topicAssetIdToProgress[459875].percentComplete }}%)

19. Tools & Instruments for Astronomy ({{ cp.topicAssetIdToProgress[459877].percentComplete }}%)

19 chapters in Astronomy 101: Intro to Astronomy

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Week {{::cp.getGoalWeekForTopic(0, 19)}}

Ch 1. The Historical Background of Astronomy {{cp.topicAssetIdToProgress[459839].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - The Scientific Field of Astronomy			Score: {{cp.lessonAssetIdToProgress[19913].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19913].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - Development of Astronomy in Ancient History			Score: {{cp.lessonAssetIdToProgress[459841].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[459841].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - Geocentric, Heliocentric & Ptolemaic Models of the Universe			Score: {{cp.lessonAssetIdToProgress[19973].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19973].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - Tycho Brahe and Copernicus Take On the Known Universe			Score: {{cp.lessonAssetIdToProgress[1141].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1141].bestScoreQuestions}} Take Quiz Optional
	Lesson 5 - Kepler's Three Laws of Planetary Motion			Score: {{cp.lessonAssetIdToProgress[19976].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19976].bestScoreQuestions}} Take Quiz Optional
	Lesson 6 - Galileo, the Telescope & the Church			Score: {{cp.lessonAssetIdToProgress[1160].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[1160].bestScoreQuestions}} Take Quiz Optional
	Lesson 7 - Telling Time in Ancient Times			Score: {{cp.lessonAssetIdToProgress[19970].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19970].bestScoreQuestions}} Take Quiz Optional

Go to chapter The Historical Background of Astronomy

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459839].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459839].bestScoreQuestions}} Practice Chapter Exam - The Historical Background of Astronomy

Week {{::cp.getGoalWeekForTopic(1, 19)}}

Ch 2. The Basics of Astronomy {{cp.topicAssetIdToProgress[459843].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

Go to chapter The Basics of Astronomy

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Week {{::cp.getGoalWeekForTopic(2, 19)}}

Ch 3. The Physics of Astronomy {{cp.topicAssetIdToProgress[459845].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - What is Light?			Score: {{cp.lessonAssetIdToProgress[31423].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31423].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - The Speed of Light: Distance & Light-Years			Score: {{cp.lessonAssetIdToProgress[31428].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31428].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - What is a Photon? - Definition, Energy & Wavelength			Score: {{cp.lessonAssetIdToProgress[10887].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[10887].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - The Law of Universal Gravitation: Definition, Importance & Examples			Score: {{cp.lessonAssetIdToProgress[19244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19244].bestScoreQuestions}} Take Quiz Optional

Go to chapter The Physics of Astronomy

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459845].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459845].bestScoreQuestions}} Practice Chapter Exam - The Physics of Astronomy

Week {{::cp.getGoalWeekForTopic(3, 19)}}

Ch 4. Understanding Orbits in Astronomy {{cp.topicAssetIdToProgress[459847].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - The Four Kinds of Trajectories for Celestial Objects			Score: {{cp.lessonAssetIdToProgress[32376].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[32376].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - Eccentricity & Orbits of Planets			Score: {{cp.lessonAssetIdToProgress[33278].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[33278].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - Center of Mass, The Barycenter & Orbital Motion			Score: {{cp.lessonAssetIdToProgress[35728].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35728].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - How Orbits Are Influenced by Gravity & Energy			Score: {{cp.lessonAssetIdToProgress[31429].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31429].bestScoreQuestions}} Take Quiz Optional
	Lesson 5 - Circular Velocity & Escape Velocity			Score: {{cp.lessonAssetIdToProgress[35729].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35729].bestScoreQuestions}} Take Quiz Optional

Go to chapter Understanding Orbits in Astronomy

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459847].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459847].bestScoreQuestions}} Practice Chapter Exam - Understanding Orbits in Astronomy

Week {{::cp.getGoalWeekForTopic(4, 19)}}

Ch 5. The Earth-Moon System {{cp.topicAssetIdToProgress[459849].percentComplete}}% complete

			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

Go to chapter The Earth-Moon System

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459849].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459849].bestScoreQuestions}} Practice Chapter Exam - The Earth-Moon System

Week {{::cp.getGoalWeekForTopic(5, 19)}}

Ch 6. The Solar System {{cp.topicAssetIdToProgress[459851].percentComplete}}% complete

			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

Go to chapter The Solar System

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459851].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459851].bestScoreQuestions}} Practice Chapter Exam - The Solar System

Week {{::cp.getGoalWeekForTopic(6, 19)}}

Ch 7. The Inner Solar System {{cp.topicAssetIdToProgress[459853].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - Inner Planets of the Solar System: Mercury, Venus, Earth & Mars			Score: {{cp.lessonAssetIdToProgress[2963].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2963].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - The Surface & Atmosphere on Mars			Score: {{cp.lessonAssetIdToProgress[20931].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20931].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - The Surface & Atmosphere on Venus			Score: {{cp.lessonAssetIdToProgress[20932].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20932].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - The Surface & Atmosphere on Mercury			Score: {{cp.lessonAssetIdToProgress[20933].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20933].bestScoreQuestions}} Take Quiz Optional

Go to chapter The Inner Solar System

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459853].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459853].bestScoreQuestions}} Practice Chapter Exam - The Inner Solar System

Week {{::cp.getGoalWeekForTopic(7, 19)}}

Ch 8. Gaseous Planets in the Solar System {{cp.topicAssetIdToProgress[459855].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - Outer Planets of the Solar System: Jupiter, Saturn, Uranus, Neptune			Score: {{cp.lessonAssetIdToProgress[2967].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2967].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - Jupiter's Important Properties			Score: {{cp.lessonAssetIdToProgress[29094].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29094].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - Saturn's Major Characteristics			Score: {{cp.lessonAssetIdToProgress[29095].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29095].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - Jupiter's & Saturn's Magnetospheres			Score: {{cp.lessonAssetIdToProgress[35732].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35732].bestScoreQuestions}} Take Quiz Optional
	Lesson 5 - Uranus's Moons, Rings, Atmosphere & Rotation			Score: {{cp.lessonAssetIdToProgress[29096].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29096].bestScoreQuestions}} Take Quiz Optional
	Lesson 6 - Neptune's Moons, Rings, Atmosphere & Temperature			Score: {{cp.lessonAssetIdToProgress[29097].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29097].bestScoreQuestions}} Take Quiz Optional

Go to chapter Gaseous Planets in the Solar System

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459855].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459855].bestScoreQuestions}} Practice Chapter Exam - Gaseous Planets in the Solar System

Week {{::cp.getGoalWeekForTopic(8, 19)}}

Ch 9. Comets, Moons & Asteroids {{cp.topicAssetIdToProgress[459857].percentComplete}}% complete

			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

Go to chapter Comets, Moons & Asteroids

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459857].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459857].bestScoreQuestions}} Practice Chapter Exam - Comets, Moons & Asteroids

Week {{::cp.getGoalWeekForTopic(9, 19)}}

Ch 10. Understanding the Science of the Sun {{cp.topicAssetIdToProgress[459859].percentComplete}}% complete

			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

Go to chapter Understanding the Science of the Sun

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Week {{::cp.getGoalWeekForTopic(10, 19)}}

Ch 11. Types of Stars in the Universe {{cp.topicAssetIdToProgress[459861].percentComplete}}% complete

			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

Go to chapter Types of Stars in the Universe

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Week {{::cp.getGoalWeekForTopic(11, 19)}}

Ch 12. Formation & Evolution of Stars {{cp.topicAssetIdToProgress[459863].percentComplete}}% complete

			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

Go to chapter Formation & Evolution of Stars

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459863].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459863].bestScoreQuestions}} Practice Chapter Exam - Formation & Evolution of Stars

Week {{::cp.getGoalWeekForTopic(12, 19)}}

Ch 13. Stellar Death & Remnants {{cp.topicAssetIdToProgress[459865].percentComplete}}% complete

			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

Go to chapter Stellar Death & Remnants

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459865].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459865].bestScoreQuestions}} Practice Chapter Exam - Stellar Death & Remnants

Week {{::cp.getGoalWeekForTopic(13, 19)}}

Ch 14. Formation & Structure of the Milky Way {{cp.topicAssetIdToProgress[459867].percentComplete}}% complete

			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

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Ch 15. Properties & Characteristics of Galaxies {{cp.topicAssetIdToProgress[459869].percentComplete}}% complete

			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

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Week {{::cp.getGoalWeekForTopic(15, 19)}}

Ch 16. Cosmology Overview {{cp.topicAssetIdToProgress[459871].percentComplete}}% complete

			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

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Week {{::cp.getGoalWeekForTopic(16, 19)}}

Ch 17. Relativity in Space & Time {{cp.topicAssetIdToProgress[459873].percentComplete}}% complete

			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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Ch 18. Overview of Life in the Universe {{cp.topicAssetIdToProgress[459875].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - The Basic Nature of Life			Score: {{cp.lessonAssetIdToProgress[28131].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28131].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - Comparing the Human Lifetime to the Universe			Score: {{cp.lessonAssetIdToProgress[28129].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28129].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - The Origin of Life on Earth: Theories and Explanations			Score: {{cp.lessonAssetIdToProgress[3123].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3123].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - Intelligent Life in Our Universe			Score: {{cp.lessonAssetIdToProgress[28710].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28710].bestScoreQuestions}} Take Quiz Optional
	Lesson 5 - Is There Life on Other Planets?			Score: {{cp.lessonAssetIdToProgress[28711].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28711].bestScoreQuestions}} Take Quiz Optional
	Lesson 6 - Planetary Predictors of Extraterrestrial Life			Score: {{cp.lessonAssetIdToProgress[2966].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2966].bestScoreQuestions}} Take Quiz Optional

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Ch 19. Tools & Instruments for Astronomy {{cp.topicAssetIdToProgress[459877].percentComplete}}% complete

			Course Progress	Best Score
	Lesson 1 - Types of Telescopes: Radio, Reflecting & Refracting Telescopes			Score: {{cp.lessonAssetIdToProgress[2956].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2956].bestScoreQuestions}} Take Quiz Optional
	Lesson 2 - Refracting & Reflecting Telescopes: Key Concepts			Score: {{cp.lessonAssetIdToProgress[31436].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31436].bestScoreQuestions}} Take Quiz Optional
	Lesson 3 - Telescopes: Powers & Limitations			Score: {{cp.lessonAssetIdToProgress[31437].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31437].bestScoreQuestions}} Take Quiz Optional
	Lesson 4 - How Telescopes Detect & Measure Light			Score: {{cp.lessonAssetIdToProgress[31441].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31441].bestScoreQuestions}} Take Quiz Optional
	Lesson 5 - Radio Telescopes & Interferometry			Score: {{cp.lessonAssetIdToProgress[31440].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31440].bestScoreQuestions}} Take Quiz Optional
	Lesson 6 - Factors That Hinder Astronomical Observations on Earth			Score: {{cp.lessonAssetIdToProgress[31447].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31447].bestScoreQuestions}} Take Quiz Optional

Go to chapter Tools & Instruments for Astronomy

Practice Chapter Exam - Score: {{cp.topicAssetIdToProgress[459877].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459877].bestScoreQuestions}} Practice Chapter Exam - Tools & Instruments for Astronomy

Course Objective

The course objective is for you to get a sense of the universe's enormity and discover the infinitesimal portion of history occupied by human existence.

Grading Policy

Your grade for this course will be calculated out of 300 points. The minimum score required to pass and become eligible for college credit for this course is 210 points, or an overall course grade of 70%. The table below shows how your overall grade will be calculated.

	Possible Points
Quizzes	100
Proctored Final Exam	200
Total	300

Quizzes

Quizzes are meant to test your comprehension of each lesson as you progress through the course. Here's a breakdown of how you will be graded on quizzes and how they'll factor into your final score:

You will have 3 attempts to take each quiz for a score.
The highest score of your first 3 attempts will be recorded as your score for each quiz.
When you've completed the course, the highest scores from your first 3 attempts at each quiz will be averaged together and weighed against the total possible points for quizzes. For instance, if your average quiz score is 85%, you'll receive 85 out of 100 possible points for quizzes.
After your initial 3 attempts, you can take a quiz for practice as many times as you'd like.
You will need to pass each quiz with a score of at least 80% to earn course progress for the lesson. However, it is not necessary to earn 80% within the first three quiz attempts.

Proctored Final Exam

The proctored final exam is a cumulative test designed to ensure that you've mastered the material in the course.

You'll earn points equivalent to the percentage grade you receive on your proctored final. (So if you earn 90% on the final, that's 90 points toward your final grade.)
If you're unsatisfied with your score on the exam, you'll be eligible to retake the exam after a 3-day waiting period.
You can only retake the exam twice, so be sure to use your study guide and fully prepare yourself before you take the exam again.

Items Allowed on Study.com Proctored Exam for Astronomy 101:

Blank scratch paper
Pen or pencil

Items NOT Allowed on Study.com Proctored Exam for Astronomy 101:

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Textbooks (digital or physical)
Mobile phones, headphones, speakers, TVs, or radios
Notebooks or notes
Any calculators

Course Outcomes

Upon completion of the course, you will be able to:

Identify contributions and major theories related to the study of astronomy in ancient and modern times; Describe the basic features and motions of the night sky.
Identify and describe the theories related to the beginning, evolution and fate of the Universe; Explain how galaxies, including the Milky Way, are formed and distributed; Identify types of galaxies and their properties.
Describe the formation and evolution of the solar system and its planets and bodies; Identify and describe the major characteristics of the Sun, planets, moons, and small bodies in the solar system, including meteoroids, asteroids, and comets.
Describe the formation, evolution, and death cycle of a variety of different star types.
Identify theories related to the origin of life and describe predictors of life on other planets.
Describe the physics of light and the electromagnetic spectrum and explain how telescopes can be used to detect and study both

Prerequisites

There are no prerequisites for this course.

Course Format

Astronomy 101 consists of short video lessons that are organized into topical chapters. Each video is approximately 5-10 minutes in length and comes with a quick quiz to help you measure your learning. The course is completely self-paced. Watch lessons on your schedule whenever and wherever you want.

At the end of each chapter, you can complete a chapter test to see if you're ready to move on or have some material to review. Once you've completed the entire course, take the practice test and use the study tools in the course to prepare for the proctored final exam. You may take the proctored final exam whenever you are ready.

How Credit Recommendations Work

This course has been evaluated and recommended NCCRS for 3 semester hours in the lower division baccalaureate degree category. To apply for transfer credit, follow these steps:

If you already have a school in mind, check with the registrar to see if the school will grant credit for courses recommended by either ACE or NCCRS.
Complete Astronomy 101 by watching video lessons and taking short quizzes.
Take the Astronomy 101 final exam directly on the Study.com site.
Request a transcript to be sent to the accredited school of your choice!
Check out this page for more information on Study.com's credit-recommended courses.

Additional Information

Course Topics

Category	Objectives
The Historical Background of Astronomy	Examines how ancient peoples used astronomical objects to tell time. Describes the scientific field of astronomy and how astronomy developed in ancient history. Differentiates between models of the universe, and explores the contributions of Kepler, Brahe and Galileo.
The Basics of Astronomy	Discusses the horizon and equatorial coordinate systems and planets of the solar system. Defines precession and the lunar and solar eclipse. Describes the cycle of the seasons in astronomy and important points on the celestial sphere.
The Physics of Astronomy	Provides definitions and descriptions of light, photons, the law of universal gravitation and the speed of light.
Understanding Orbits in Astronomy	Teaches ways orbits are influenced by gravity and energy, and explains of orbits of the planets, trajectories for celestial objects and differences between circular and escape velocity.
The Earth-Moon System	Explains Earth's formation and four spheres, the structure of the atmosphere and the moon's formation, rocks, motion, atmosphere and phases.
The Solar System	Introduces solar nebula theory, the solar system's layout and characteristics as well as methods for determining its age. Teaches what caused planets to form, and describes planetisimals, the Jovian problem and planetary geology.
The Inner Solar System	Describes the inner planets of the solar system and the surface and atmosphere on Mercury, Venus and Mars.
Gaseous Planets in the Solar System	Discusses outer planets of the solar system. Explains the properties of Jupiter, characteristics of Saturn and moons and atmosphere of Uranus and Neptune.
Comets, Moons & Asteroids	Examines how satellites are formed, and lists characteristics of asteroids, meteoroids and comets. Identifies moons of the Jovian planets, classifications of meteorites and dwarf planets of the solar system.
Understanding the Science of the Sun	Teaches about the sun's structure, atmosphere and life cycle. Defines the photosphere and chromosphere, and discusses sunspots, helioseismology and the heliosphere. Provides details about the solar corona, solar wind, solar flares and solar prominences.
Types of Stars in the Universe	Lists types of stars and star clusters, and defines main sequence and binary stars. Describes the planets around distant stars, constellations and zodiac constellations.
Formation & Evolution of Stars	Details how stars form, and provides a description of the interstellar medium. Examines different types of nebulae, young stellar objects and protostellar disks, giant stars and forces keeping stars in a stable equilibrium.
Stellar Death & Remnants	Educates on the definitions of planetary nebulae, white dwarfs, pulsars, cosmic rays, neutron stars and supernova remnants. Explains how lower-main-sequence stars die, and describes the origin of gamma-ray burst and cosmic recycling.
Formation & Structure of the Milky Way	Outlines how the Milky Way galaxy formed and it was discovered. Describes the structure and mass of our galaxy, nucleus of a galaxy and differences between population I and II stars.
Properties & Characteristics of Galaxies	Introduces Hubble's law and Hubble's constant, dark matter, quasars and supermassive black holes. Discusses the collision of galaxies and distribution of galaxy properties, and describes types of spiral galaxies and galaxy clusters. Teaches about active galactic nuclei and how to measure the properties of distant galaxies.
Cosmology Overview	Shares facts about the origins of the universe, evidence for the Big Bang theory, the cosmological principle, cosmic inflation and three models of the universe. Distinguishes between the observable universe and entire universe, and describes the evolution of the early universe.
Relativity in Space & Time	Defines classical, general and special relativity. Discusses time dilation, space contradiction and the relationship between mass and energy.
Overview of Life in the Universe	Examines the basic nature of life and origin of life on Earth. Examines intelligent life in the universe and planetary predictors of extraterrestrial life. Compares the human lifetime to the lifespan of the universe.
Tools & Instruments for Astronomy	Describes types and limitations of telescopes. Explains how telescopes measure and detect light, and outlines factors that hinder astronomical observations on Earth.

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Pre-Exam Checklist

Before taking the exam, all of the following requirements must be met:

	A College Accelerator Study.com membership.
	Completed the entire Astronomy 101: Intro to Astronomy course and achieved 100% Course Progress.
	Not attempted to take this exam within the last three days.
	Have available proctored exams in this month of membership.
	Complete the exam readiness quiz.

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3. Take Exam

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4. Get Exam Results

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