The Universe is REALLY Big
Counting the grains of sand on all the beaches in the world is an impossible task. It may be impossible, but it is possible to make an almost reasonable estimate.
The same is true of the number of stars in the universe. Most scientists put that estimate between 1011 and 1012. Since there are estimated to be the same number of universes, the total number of stars is those two numbers multiplied together giving 1023
1. Watch each of the following videos. List five facts from each of them. Include and highlight the most important vocabulary in the video.
2. Read: pg. 715-722.
3. Do: Chapter 25 worksheet, pages 185 and 186.
The Milky Way Galaxy
Types of Galaxies
How everything got here has always been an intriguing question pursued by humans. The Big Bang Theory is only one of several that has been explored. The Big Bang Theory is the one most often chosen by authors of Earth Science textbooks. If you are interested in how it all started, we encourage you to explore other theories that exist.
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