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:

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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