Entropy in Cosmology

In cosmology, entropy measures the disorder or randomness of the universe’s state. Over time, the universe's entropy tends to increase, meaning systems become more disorganized. For example, energy spreads out more evenly, like when a hot object cools down or gas disperses in a room. This increase in entropy is linked to the universe’s evolution, including the formation of stars, galaxies, and the eventual fate of cosmic structures. Overall, entropy helps us understand why the universe started in a low-entropy, highly ordered state and why it evolves toward greater disorder.