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Latest / What If: Science, Theory, and Possibilities

Before the Big Bang and Beyond: The Universe’s Most Mind-Bending Possibilities

What could have existed before the Big Bang? What would happen if the universe began to shrink? Explore cosmic possibilities, from the largest objects in the universe to a galaxy collision that could reshape our night sky.

Discover Milkdromeda, imagine seeing the fourth dimension, and consider what it would be like to fall into the biggest cosmic void. This episode explores the scale of the cosmos and hypothetical journeys through space and time.

Explore more science with Popular Science, a free streaming channel featuring What If, engineering, rocket launches, movies, space, and Earth…

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