of Contents

Lesson 1
Lesson 2
What is astronomy?
Lesson 3
How big is the universe?
Lesson 4
The origin of the universe
Lesson 5
Watching the sky
Lesson 6
Why did God created the heavenly bodies?
Lesson 7
Space exploration
Lesson 8
A Tour of the Solar System
Lesson 9
A Tour of the Solar System—The Sun and the Moon
Lesson 10
Stars and galaxies
Lesson 11
Cosmic Catastrophes
Lesson 12
Catastrophes in the Solar System
Lesson 13
Are there other planets in the Solar System?
Author: Dr. Jonathan Henry

For thousands of years, people have gazed at the night sky and the bright

morning and wondered, ‘What’s out there?’. Our universe is so vast and

awe-inspiring that to learn about it is to learn about ourselves. The

Astronomy Book will show you: 

What long-ago astronomers thought about other worlds

Solar system facts

How constellations relate to astrology

The history of space exploration

Whether black holes exist

The origin and age of the moon

Why Mars doesn’t support life

The composition of stars

Supernova remnants

The myth of star birth

Asteroid legends and the extinction of the dinosaurs

Whether planets outside our solar system could be home to intelligent life

What UFOs are

The age of comets and meteor showers

Hardcover. (Junior High–Adult) 80 pages.

The Astronomy Book
by Dr Jonathan Henry

Lesson 10

Stars and galaxies


The Astronomy Book


pp. 50-55


Genesis 1:15, 16
Judges 5:20
Psalm 147:4

Vocabulary Words

  • Incandescent
  • Spectrum
  • Prism
  • Spectral analysis
  • Stellar magnitudes
  • Black hole
  • Galaxy


  1. Write an essay (at least 3 paragraphs) describing the composition of stars.
  2. What are the colors in the spectrum? (Hint: there are 7 colors and they can be remembered by a name, ‘Roy G Biv’.)
  3. Anna Jump Cannon is the lady scientist responsible for developing the current classification scheme of dividing stars into their spectral classes (O,B,A,F,G,K,M). Write a research paper on her life and work.
  4. Henrietta Swan Leavitt worked on developing a way to measure the distance to stars. Find out more about her from Creation Safaris’ The World’s Greatest Creation Scientists from Y1K to Y2K, and write a research paper about her life and work.
  5. How do stars differ from each other?
  6. What is a ‘black hole’? (See also Black holes in space don’t support evolution!).
  7. In what galaxy is Earth located?

Additional Resources