Lesson Plan - Get It!
Think about it — There are over a billion stars in each of about 100 billion galaxies in our cosmos! And that's just an estimate that scientists believe will grow even larger as we discover more about our universe! It is unimaginably enormous. Have you ever thought about how the existence of a star begins or what our own galaxy is called? Well, let’s strap on our space helmets and let’s explore!
We've landed in a galaxy — our galaxy to be exact.
- Would you by any chance know what our galaxy is called?
If you guessed "the Milky Way," then you are super-steller!
- Can you guess why it's called "the Milky Way"?
The Milky Way is spiral in shape and contains over 100 billion stars. The Milky Way has a large black hole in the center of it that swallows anything that gets close to the edge.
There are a lot of other galaxies in the universe, and the complex variety and uniqueness of the stars and galaxies of the universe are magnificent. There are so many different types, sizes, and colors of stars in each. Maybe you thought these stars were just little dots in the night sky! There are galaxies that are elliptical, spiral, and irregular in shape. Some scientific theories state that galaxies formed from bits and pieces of matter and gas clumping together to create what they look like today. These are materials and pieces of matter that fused together to form the present-day galaxy.
Some scientists follow the theory that we live in an old universe and these galaxies are millions — even billions — of years old. Others follow a different scientific theory: We are actually part of a young universe that was created or intelligently designed.
Take a look at both of the videos below to hear two different theories on spiral galaxies.
- Does each video provide an in-depth and thorough explanation?
- What are your views on how the galaxies were created?
Complete the Galaxy and Star Creation worksheet, found under Downloadable Resourcesin the right-hand sidebar, to organize your thoughts.
Old universe video: Where Do Galaxies Come From?, from minutephysics:
Young universe video: Spiral Galaxies and a Young Universe | David Rives, from David Rives Ministries:
- When you ponder the existence of the stars, do you wonder why they are present, and why they are here?
If you answered, “To provide light for us in darkness,” you are on track!
- How do these wonderful illuminators of the night come into existence?
Watch the next videos to learn more about the theories behind the formation of the stars. Continue using your Galaxy and Star Creation worksheet as you watch and listen.
Old universe video: How stars are formed and born, from Gábor Hényel:
Young universe video: Science confirms God's creation!, from evidence of eden:
There are different steps and names for the process of star creation. Read the Life Cycle of a Star, courtesy of National Schools' Observatory, to learn the name and importance of each part of the cycle. Use the left-hand sidebar on the site and the links in the text to navigate through each of the nine phases. Record your notes in the space below.
Now that you have explored more about the process that goes into the formation of stars and galaxies, let’s travel to the Got It! section to learn some interesting facts about both stars and galaxies.