Questions? Speak to an advisor: Request Info
for Teachers for Schools for Enterprise
Request Info
for Teachers for Schools for Enterprise
 Science
First Lesson 

Astronomy 101: Intro to Astronomy

  • Course type: Self-paced
  • Available Lessons: 167
  • Average Lesson Length: 8 min
  • Eligible for Credit: Yes

    Earn transferable credit by taking this course for credit.

  • Watch a preview:

    The Scientific Field of Astronomy
    chapter 1 / lesson 1
    The Scientific Field of Astronomy
    • Astronomy 101: Intro to Astronomy Practice Test
    Take Practice Test
Questions about online credit?
Study.com Advisors are available.
Call us or request info by email.

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.
Create An Account
To Start This Course Today
Used by over 30 million students worldwide
Create An Account
Try it free for 5 days

20 chapters in Astronomy 101: Intro to Astronomy

expand all | collapse all

Course Practice Test

Check your knowledge of this course with a 50-question practice test.
  • Comprehensive test covering all topics
  • Detailed video explanations for wrong answers

Take Practice Test

View all practice tests in this course
Week {{::cp.getGoalWeekForTopic(0, 20)}}
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[19970].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19970].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Historical Background of Astronomy
Practice test: The Historical Background of Astronomy Score: {{cp.topicAssetIdToProgress[459839].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459839].bestScoreQuestions}} Practice test: The Historical Background of Astronomy
Week {{::cp.getGoalWeekForTopic(1, 20)}}
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[31125].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[31125].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Basics of Astronomy
Practice test: The Basics of Astronomy Score: {{cp.topicAssetIdToProgress[459843].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459843].bestScoreQuestions}} Practice test: The Basics of Astronomy
Week {{::cp.getGoalWeekForTopic(2, 20)}}
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[19244].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19244].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Physics of Astronomy
Practice test: The Physics of Astronomy Score: {{cp.topicAssetIdToProgress[459845].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459845].bestScoreQuestions}} Practice test: The Physics of Astronomy
Week {{::cp.getGoalWeekForTopic(3, 20)}}
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[35729].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35729].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Understanding Orbits in Astronomy
Practice test: Understanding Orbits in Astronomy Score: {{cp.topicAssetIdToProgress[459847].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459847].bestScoreQuestions}} Practice test: Understanding Orbits in Astronomy
Week {{::cp.getGoalWeekForTopic(4, 20)}}
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[30372].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[30372].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Earth-Moon System
Practice test: The Earth-Moon System Score: {{cp.topicAssetIdToProgress[459849].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459849].bestScoreQuestions}} Practice test: The Earth-Moon System
Week {{::cp.getGoalWeekForTopic(5, 20)}}
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
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[17922].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[17922].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Solar System
Practice test: The Solar System Score: {{cp.topicAssetIdToProgress[459851].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459851].bestScoreQuestions}} Practice test: The Solar System
Week {{::cp.getGoalWeekForTopic(6, 20)}}
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[20933].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[20933].bestScoreQuestions}}  Take Quiz Optional
Go to chapter The Inner Solar System
Practice test: The Inner Solar System Score: {{cp.topicAssetIdToProgress[459853].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459853].bestScoreQuestions}} Practice test: The Inner Solar System
Week {{::cp.getGoalWeekForTopic(7, 20)}}
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[29097].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[29097].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Gaseous Planets in the Solar System
Practice test: Gaseous Planets in the Solar System Score: {{cp.topicAssetIdToProgress[459855].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459855].bestScoreQuestions}} Practice test: Gaseous Planets in the Solar System
Week {{::cp.getGoalWeekForTopic(8, 20)}}
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[2968].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2968].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Comets, Moons & Asteroids
Practice test: Comets, Moons & Asteroids Score: {{cp.topicAssetIdToProgress[459857].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459857].bestScoreQuestions}} Practice test: Comets, Moons & Asteroids
Week {{::cp.getGoalWeekForTopic(9, 20)}}
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
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[2959].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[2959].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Understanding the Science of the Sun
Practice test: Understanding the Science of the Sun Score: {{cp.topicAssetIdToProgress[459859].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459859].bestScoreQuestions}} Practice test: Understanding the Science of the Sun
Week {{::cp.getGoalWeekForTopic(10, 20)}}
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[19969].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[19969].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Types of Stars in the Universe
Practice test: Types of Stars in the Universe Score: {{cp.topicAssetIdToProgress[459861].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459861].bestScoreQuestions}} Practice test: Types of Stars in the Universe
Week {{::cp.getGoalWeekForTopic(11, 20)}}
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[21693].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[21693].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Formation & Evolution of Stars
Practice test: Formation & Evolution of Stars Score: {{cp.topicAssetIdToProgress[459863].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459863].bestScoreQuestions}} Practice test: Formation & Evolution of Stars
Week {{::cp.getGoalWeekForTopic(12, 20)}}
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
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
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[35740].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[35740].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Stellar Death & Remnants
Practice test: Stellar Death & Remnants Score: {{cp.topicAssetIdToProgress[459865].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459865].bestScoreQuestions}} Practice test: Stellar Death & Remnants
Week {{::cp.getGoalWeekForTopic(13, 20)}}
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[26873].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26873].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Formation & Structure of the Milky Way
Practice test: Formation & Structure of the Milky Way Score: {{cp.topicAssetIdToProgress[459867].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459867].bestScoreQuestions}} Practice test: Formation & Structure of the Milky Way
Week {{::cp.getGoalWeekForTopic(14, 20)}}
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[26470].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[26470].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Properties & Characteristics of Galaxies
Practice test: Properties & Characteristics of Galaxies Score: {{cp.topicAssetIdToProgress[459869].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459869].bestScoreQuestions}} Practice test: Properties & Characteristics of Galaxies
Week {{::cp.getGoalWeekForTopic(15, 20)}}
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
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
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
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
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
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
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
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[28121].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[28121].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Cosmology Overview
Practice test: Cosmology Overview Score: {{cp.topicAssetIdToProgress[459871].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459871].bestScoreQuestions}} Practice test: Cosmology Overview
Week {{::cp.getGoalWeekForTopic(16, 20)}}
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
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
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
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
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
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
Score: {{cp.lessonAssetIdToProgress[3233].bestScoreCorrect}}/{{cp.lessonAssetIdToProgress[3233].bestScoreQuestions}}  Take Quiz Optional
Go to chapter Relativity in Space & Time
Practice test: Relativity in Space & Time Score: {{cp.topicAssetIdToProgress[459873].bestScoreCorrect}}/{{cp.topicAssetIdToProgress[459873].bestScoreQuestions}} Practice test: Relativity in Space & Time
Week {{::cp.getGoalWeekForTopic(17, 20)}}
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
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
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
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
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
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