Starting with a seemingly simple question, a video covers how many stars are visible with the human eye. Then it explains how many stars are in the Andromeda galaxy next to ours. The most interesting part is when you view a single square of dark space and learn how many stars there really are in that tiny segment of the vastness of space. 

Concepts

stars, galaxies, the universe

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Additional Tags

science

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Instructional Ideas

• Before the video, have students guess the number of stars and offer a prize to the one who is closest
• The notes section below the video includes articles, videos, activities, and more that go in depth about the topic

Classroom Considerations

• Use standard caution when showing YouTube videos, as comments are often not appropriate for the classroom
• The eighth video in a series of 22

• This video is hosted on YouTube

Pros

• Works well for a traditional or flipped classroom, so you can tailor the class to your needs
• Includes primary photos from NASA
• Diagrams and grids are clear and easy to understand

Cons

• None