Relativity and Gravitation

Relativity, developed by Einstein, describes how space and time are intertwined; it suggests that massive objects like planets warp the fabric of spacetime, causing gravity. In particle astrophysics, this is essential for understanding how particles behave in extreme conditions, such as near black holes or during the formation of the universe. Gravity affects the paths of particles and light, influencing phenomena like cosmic rays and the movement of galaxies. Essentially, relativity and gravity provide a framework for understanding how the universe operates, connecting the smallest particles to the largest structures.