About This Chapter
Origins & Theories of the Universe - Chapter Summary
This chapter's lessons explore the origins and structure of our solar system and galaxy, as well as the whole universe. You'll look at several ideas on how the universe was formed and the evidence scientists have to support these ideas.
Other lessons explore the evolution of the early universe, and look at how scientists calculate the universe's age. Hubble's law and Hubble's constant are examined here, too. After completing this series of video lessons, you should be prepared to:
- Define solar system, galaxy and universe
- Explain the concepts of the expanding and contracting universe
- Contrast the Steady State and the Big Bang theories
- Analyze evidence for the Big Bang theory, such as background radiation and expansion
- Explore the evolution of the early universe
- Describe Hubble's law and Hubble's constant
- Discuss the cosmological principle
- Calculate the universe's age
These brief lessons are taught by professionals who make instruction both enjoyable and informative. Our format lets you study any time you have a few extra minutes and access to a computer or mobile device. You can assess your knowledge through the multiple-choice quizzes that follow each of the lessons.
1. Solar System, Galaxy, & Universe: Definitions & Difference
Want to learn what the universe, galaxy, and solar system are as well as some cool facts about each one? This lesson will give you an overview of what these three things are in a relatable fashion.
2. Origins of the Universe: The Big Bang and Expanding & Contracting Universes
Students will learn the origins of the universe, the Big Bang theory, the timeline of the universe, how the universe is still expanding to this day, and what astronomers expect the universe to look like in the future.
3. The Steady State Theory vs. the Big Bang Theory
Did you know that the Big Bang wasn't always a well-accepted theory of our universe? There was a competing theory called the Steady State theory. Find out what it was all about and why its proponent actually helped name the Big Bang theory.
4. Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion
Discover what evidence exists to support the Big Bang theory of the birth of the universe. Learn how cosmic background radiation, the red shift of light and the ongoing expansion of the universe led scientists to believe that the universe was started with the Big Bang.
5. The Evolution of the Early Universe
This lesson will describe four important stages of development in the early universe, the radiation era, recombination (decoupling) epoch, the dark age, and reionization era.
6. The Cosmological Principle
This lesson will dive into the famous cosmological principle by defining and explaining isotropy and homogeneity as well as their important implications for our universe.
7. How To Calculate the Age of the Universe
This lesson will explain to you how old our universe is and how we calculate it thanks to the Hubble law and Hubble constant as well as one other simple equation.
8. Hubble's Law & Hubble's Constant
This lesson will go over and define the Hubble Law and Hubble constant. We'll not only do a practice problem but also define conceptually what these two things mean to our cosmos.
9. The Universe's Curvature, Age & Fate
What is the age of our universe? What shape does it take? What determines the fate of our universe and what is this fate? This lesson will tell you all of this and more!
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the MTTC Earth/Space Science (020): Practice & Study Guide course
- Foundations of Earth Science
- Nature of Scientific Inquiry
- Scientific Data & Calculations
- Maps & Spatial Concepts
- Space Science Technology
- Laboratory Equipment, Safety & Procedures
- Earth's Formation & Structure
- Plate Tectonics, Continental Drift & Ocean Formations
- Understanding Earthquakes
- Rocks & Minerals
- Effect of Weathering, Erosion & Deposition
- Geologic Time & Earth's History
- Environmental Impacts of Earth's Natural Resources
- Properties of Water & the Hydrologic Cycle
- Ocean Formation & Characteristics
- Earth's Groundwater
- Earth's Fresh Water
- Global Water Issues
- Atmospheric Structure & Energy Transfer
- Season & Climate Classifications
- Wind, Air Masses & ENSO in Atmospheric Circulation
- Weather Conditions, Patterns & Severe Weather
- Weather Forecasting and Analysis
- Climate Change & Air Pollution
- The Earth & the Moon
- The Sun's Structure, Energy & Life Cycle
- Solar Radiation, Energy & Light
- Celestial Orbit Characteristics
- Formation of the Solar System
- Celestial Bodies in the Solar System
- Kepler & Newton's Laws of Motion
- Star Types & Life Cycle
- Characteristics of Stars
- MTTC Earth/Space Science Flashcards