Kruskal Coordinates

Kruskal coordinates are a way to describe the geometry of black holes and the space around them. They provide a coordinate system that covers the entire black hole's region, including the area outside and the singularity at the center. Unlike traditional coordinates, which can break down at the event horizon (the point of no return), Kruskal coordinates remain well-defined and demonstrate how time and space behave near a black hole. This is important for understanding how light and matter interact with gravity in extreme conditions, helping physicists study the nature of black holes and spacetime.