Our Universe's "Dark" Secret | How the Universe Works | Science Channel

Dark matter is one of the largest mysteries in our cosmos-- ubiquitously abundant and invisible to the eye, yet it controls the fate of all that surrounds us. We know little about dark matter's composition, and what we do know only leads to more questions. Might there be a "dark" Earth after all?

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With a cast of experts and eye-popping CGI, we're looking under the celestial hood to tell the greatest story of all -- the story of where we and everything else came from.

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