The study of the early universe focuses on understanding the beginning stages of the universe's evolution, shortly after the Big Bang. Researchers in this field investigate the fundamental properties of the universe, such as its expansion, formation of cosmic structures, and the origins of galaxies and cosmic microwave background radiation. By analyzing the early universe, scientists aim to unlock key insights into the fundamental laws of physics and the origins of the universe as we know it today. This area of research utilizes a combination of theoretical models, observational data, and experimental evidence to piece together the story of how the universe evolved from its inception to its current state.