Cosmology

 The Universe is the vast expanse of space and all the matter, energy, and other physical phenomena that exist within it. It includes everything from the tiniest subatomic particles to the largest known structures such as galaxies, galaxy clusters, and superclusters. The Universe is thought to have begun with a massive explosion known as the Big Bang, which occurred approximately 13.8 billion years ago. At the moment of the Big Bang, all matter, energy, and space itself were compressed into an extremely small point, often referred to as a singularity. As the Universe rapidly expanded, matter and energy began to cool and clump together, eventually forming stars, planets, and other celestial bodies. Gravity played a crucial role in this process, pulling matter together into denser regions that eventually became galaxies. The Universe is constantly expanding, with galaxies moving away from each other at increasing speeds. This expansion is thought to be driven by a mysterious force