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 create 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 13

Are there other planets in the Solar System?


The Astronomy Book


pp. 72-75


Romans 8:20-22
Genesis 1:14-18
Hebrews 4:15

Vocabulary Words

  • Binary stars
  • Exobiology
  • UFO


  1. Use the glossary (pp. 77-78) to define the vocabulary words.
  2. Although the book states, ‘Astronomers have found no planets outside our solar system’, this is an out-dated statement. Please read The existence and origin of extrasolar planets for up-dated information. Describe a Biblical perspective on the existence of planets outside the solar system.
  3. When reading articles in either newspapers or magazines about new discoveries in any scientific discipline (e.g. paleontology, anthropology, geology, biology, etc.), what question should you ask about what you’re reading?
  4. What causes a star to appear to ‘wobble’?
  5. Read the ‘What are UFOs?’ section, Life on Mars?, and God and the Extraterrestrials. Then read the Gospel message. Biblically, why do we not expect to find signs of intelligent life outside of Earth?
  6. What does SETI stand for?

Alien Intrusion
by Gary Bates

Additional resources: