To Scale: The Solar System • 2015

Category: Astronomy
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On a dry lakebed in Nevada, a group of friends build the first scale model of the solar system with complete planetary orbits: a true illustration of our place in the universe.

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The Mystery of the Universe's Bubbles

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Examining a ninth planet that may be on the outer edge of the solar system. Scientists speculate that it could be 10 times the size of Earth and have moons capable of hosting life.

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