👉 Etherialization is a concept in cosmology that refers to the idea of a universe where all matter and energy are condensed into a single, indivisible particle called "ether." This idea was proposed by Albert Einstein in 1905 when he predicted that the universe would collapse into a singularity if it were not for the existence of a fundamental entity known as the "spacetime curvature," which is what allows the universe to be so large and dense. Etherialization has been