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A Deep Dive into Dark Matter!
The universe is made of about 75% dark matter and 25% dark energy, which means that we don't understand a lot about either one. I'll explain what dark matter is and how it's used to explain how stars form, how galaxies and black holes form, and how the universe works.
Dark matter is a mysterious substance that is thought to be responsible for holding galaxies together. We know only a few percent of its identity because it does not interact with light. This is a relatively new field of science, and the only way to learn more is to observe it directly.
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