What Is Dark Matter?

The video explores the composition of the universe, focusing on dark matter and dark energy. It explains how dark matter, which makes up 27% of the universe, interacts with gravity but not light, making it difficult to detect. The concept of Einstein rings is introduced to illustrate dark matter's effect on light. Various theories about dark matter, including WIMPs and parallel universes, are discussed. The video also touches on dark energy, which constitutes 68% of the universe, and its enigmatic properties.

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