Over the past fifty years, astronomers have grown increasingly certain that most of the Universe is made up of a mysterious, invisible substance that defies our current understanding of physics. This enigmatic material — known as Dark Matter — appears to have shaped the cosmos from its earliest moments, playing a crucial role in the formation of galaxies, stars, and ultimately, life itself. Yet despite its profound influence, Dark Matter has never been directly detected.

Join astronomer Matt Bothwell as he explores the evidence that has led scientists to this astonishing conclusion. From the motions of galaxies to the afterglow of the Big Bang, he reveals the clues that point to this hidden side of the cosmos — and the ongoing quest to uncover the true nature of Dark Matter.

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