How Big is the Universe?

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.

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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
  • 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
  • None