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  The Enigma of Dark Matter Dark matter is one of the greatest mysteries in modern astrophysics and cosmology. This invisible and elusive substance makes up the majority of the matter in the universe, yet its nature remains largely unknown. Understanding the properties and role of dark matter is crucial for our comprehensive understanding of the cosmos. The Evidence for Dark Matter The existence of dark matter was first inferred through its gravitational effects on the motion of galaxies and the observed structure of the universe. Astronomers have observed that galaxies and galaxy clusters appear to contain much more mass than can be accounted for by the visible matter we can observe, such as stars, gas, and dust. This "missing mass" is believed to be composed of dark matter, which does not emit or reflect light but still exerts a gravitational influence. Key Evidence for Dark Matter- Galactic Rotation Curves: The observed speeds of stars and gas in galaxies are higher than ...

Dark Matter and Dark Energy: Unveiling the Mysteries of the Universe’s Invisible Forces By Dr. Leo Lexicon - October 26, 2024 The Unseen Universe: Dark Matter and Dark Energy The universe is filled with mysteries that challenge our understanding of physics and cosmology. Two of the most profound, yet invisible, components of our cosmos are dark matter and dark energy. Together, these enigmatic forces comprise approximately 95% of the universe’s total mass-energy content, yet they remain undetectable through traditional means. Despite decades of research, scientists continue to grapple with the question: What are dark matter and dark energy, and how do they shape the universe? Fig. A Simulation of Dark Matter (Source: Springel, et al, 2005) What is Dark Matter? Dark matter is a form of matter that does not emit, absorb, or reflect light, making it invisible to all forms of electromagnetic detection. First postulated in the 1930s by Swiss astronomer Fritz Zwicky, dark matter’s existence ...