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Instructional Video

Radius of Observable Universe, Scale of the Universe, Cosmology and Astronomy

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This Radius of Observable Universe, Scale of the Universe, Cosmology and Astronomy instructional video also includes:

Radius of Observable Universe (HTML version from khanacademy.org)
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The concept of the universe can be incredibly complex on both physical and mathematical levels. Yet Salman Khan can explain concepts that lead to conclusions about the universe's size. He uses intriguing diagrams and presents information that should keep viewers interested.

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Concepts

the speed of light, light, light years, the big bang theory

Additional Tags

big bang, speed of light, universe size, expansion of the universe, light year, science

Classroom Considerations

This video is hosted on YouTube

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