3 articles
Dark matter, which outweighs all visible matter, surprisingly does not collapse under gravity to form stars or black holes. Instead, it forms vast, diffuse clouds around galaxies, baffling scientists with its unique behavior. Understanding this cosmic enigma is key to comprehending the universe's structure and evolution.
Dark matter, unlike normal matter, does not collapse into stars or black holes because it cannot radiate energy away as heat. Its inability to interact with the electromagnetic force prevents the cooling necessary for gravity to overcome particle pressure. This unique property leads to the formation of vast, diffuse structures like galactic halos and the cosmic web.
A surprising physics demonstration shows a weight rising after a connecting rope is cut. The counterintuitive outcome is explained by the stored energy and rapid contraction of springs in the system.
