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Ch 51: The Big Bang & Extrasolar Astronomy

About This Chapter

This chapter on the Big Bang and extrasolar astronomy can teach you about galaxy formation, planetary predictors of extraterrestrial life, and a whole lot more. These lessons are especially valuable when preparing for an exam or working on class assignments.

The Big Bang & Extrasolar Astronomy - Chapter Summary

In these lessons on the Big Bang and extrasolar astronomy, you can review evidence for the Big Bang theory and the life cycle of stars. You can also gain an enhanced understanding of elliptical, irregular, and spiral galaxies. By the end of the chapter, you should be able to:

  • Provide an overview of the Big Bang theory
  • Discuss background radiation and red-shift
  • Recall different types of stars
  • Describe the life cycle of black holes
  • Outline planetary predictors of extraterrestrial life
  • Define gravitational lensing and dark matter
  • Explain how technology is used to study the universe
  • List different types of telescopes

Master topics presented on the Big Bang and extrasolar astronomy with these easy-to-follow text and video lessons. You have the option of reviewing every single lesson or just studying a select few based on your needs. You can even assess your knowledge of the topics covered by taking a short quiz that's available for each lesson.

9 Lessons in Chapter 51: The Big Bang & Extrasolar Astronomy
Test your knowledge with a 30-question chapter practice test
The Big Bang Theory: Explanation and Evidence

1. The Big Bang Theory: Explanation and Evidence

A popular scientific theory is that our universe originated with what is known as the Big Bang. This lesson explains what the Big Bang is and the evidence that supports it. Following the lesson, you can test your newfound knowledge with a quiz!

Evidence for the Big Bang Theory: Background Radiation, Red-Shift and Expansion

2. 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.

Galaxy Formation: Spiral, Elliptical & Irregular Galaxies

3. Galaxy Formation: Spiral, Elliptical & Irregular Galaxies

This lesson explains how galaxies form, starting with the Big Bang. You'll also learn about the solar nebula hypothesis and three galaxy types, including spiral, elliptical, and irregular galaxies.

Formation, Types & Life Cycles of Stars

4. Formation, Types & Life Cycles of Stars

After reading this lesson, you will be able to describe how stars form and what form they take as well as describing the common cycles of their lives. A short quiz will follow.

Life Cycle of Black Holes

5. Life Cycle of Black Holes

Learn about black holes, their myths and their reality. Learn how black holes form after stars undergo supernovae and create singularities. Discover how big black holes grow, how scientists find black holes and where black holes are located in the universe.

Dark Matter & Gravitational Lensing

6. Dark Matter & Gravitational Lensing

This lesson will describe what dark matter is, how much of a cluster of galaxies is made of it, where it's located, and how all of this is related to gravitational lensing.

Planetary Predictors of Extraterrestrial Life

7. Planetary Predictors of Extraterrestrial Life

Investigate what is needed for life to exist anywhere and the implications for life in our solar system beyond Earth. Consider Mars and some of the moons of Jupiter and Saturn, including Europa, Callisto, Ganymede and Enceladus.

Using Technology to Study the Earth & Universe

8. Using Technology to Study the Earth & Universe

Have you ever wondered how we know so much about the universe? Learn about how we use technology to study the universe, from the tiny to the enormous. Then take a quiz to test your knowledge.

Types of Telescopes: Radio, Reflecting & Refracting Telescopes

9. Types of Telescopes: Radio, Reflecting & Refracting Telescopes

Learn about the different types of telescopes that astronomers use: X-ray, radio, gamma ray, reflecting and refracting. Learn what the differences are between them and what different things they show us about the universe.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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