Can you measure the size of something that's getting bigger all the time? It depends upon your perspective! Space scholars discover fundamental facts about our ever-growing universe. The narrator explains the difference between the observable universe and the whole universe, then describes each in terms of size, presence of a center, presence of edges, and expansion.

Concepts

the universe, time, space, expansion, the horizon line, perspective

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Additional Tags

science

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Instructional Ideas

• Show the video to finish a unit on attributes of the universe or space exploration
• Assign a research project focused on deep space exploration to further illustrate our knowledge of the observable universe

Classroom Considerations

• Some prior knowledge of the Big Bang theory is helpful but not completely necessary

• This video is hosted on YouTube

Pros

• At the end of the video, the narrator constructs a helpful graphic organizer to pull the lesson together
• Animated sequences help give visual reference to a topic that can be difficult to observe in the classroom

Cons

• None