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When 96% of the universe disappears, three theories race to explain it.
Explore the mystery of dark matter through the clues that reshaped modern cosmology, from fast-spinning galaxies to revealing maps of the early universe. This film examines three leading explanations for the unseen mass thought to hold galaxies together, while opening bigger questions about dark energy and the fate of the cosmos. Sign up to see how these discoveries changed our picture of everything.
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