Dark matter remains one of the most captivating mysteries of the universe, challenging scientists and enchanting the imagination of the public. This eBook describes various aspects of dark matter research, shedding light on its nature, impact, and future directions. Dark matter is a mysterious form of matter that does not emit, absorb, or reflect electromagnetic radiation, making it invisible and elusive to direct detection. Its existence is inferred from gravitational effects observed on cosmic scales. The historical journey of dark matter research spans decades, from its initial proposal as a solution to galactic rotation curves to its integration into cosmological models as a dominant component of the universe. Despite extensive efforts, detecting dark matter remains a formidable challenge due to its elusive nature and weak interactions with ordinary matter. Various experimental and observational techniques are employed to search for dark matter particles and signatures. Theoretical models, such as Modified Newtonian Dynamics (MOND), offer alternative explanations to dark matter, challenging the prevailing paradigm and stimulating debate within the scientific community. The future of dark matter research holds promise for advancing our understanding of the universe. International collaborations, next-generation experiments, and theoretical innovations will drive progress in unraveling the mysteries of dark matter. As we continue our quest to understand the fundamental nature of the universe, dark matter remains a tantalizing puzzle waiting to be solved.