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Dark matter is one of the biggest unsolved mysteries in modern science, an invisible form of matter that does not emit, absorb, or reflect light, yet makes up nearly 85% of all matter in the universe. Scientists first suspected dark matter when they observed that galaxies rotate much faster than they should based on visible matter alone, and later evidence from gravitational lensing, galaxy clusters, and the large-scale structure of the universe confirmed that something unseen was holding everything together. This video explains what dark matter is, why it cannot be directly seen, and how researchers have been trying to detect it for decades using particle detectors, underground laboratories, and space observations. It also covers what is happening in dark matter research today, including experiments searching for WIMPs, axions, and other hypothetical particles, as well as why results remain inconclusive. A special focus is given to Italian scientists and Italy’s Gran Sasso National Laboratory, home to world-famous experiments like DAMA/LIBRA and XENON, which are buried deep underground to shield them from cosmic radiation while searching for rare dark matter interactions. Despite many signals, debates, and null results, dark matter continues to evade direct detection, making it one of the most important puzzles that could completely change our understanding of physics, galaxies, and the universe itself.

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