Rindler space

Rindler space describes the perspective of a constantly accelerating observer in flat spacetime, like someone in a spaceship that’s continually speeding up. From this viewpoint, certain regions appear hidden or inaccessible—similar to how an observer near a black hole’s event horizon perceives space. This framework helps understand how acceleration affects observations, such as the perception of empty space versus radiation, bridging general relativity and quantum effects. Essentially, Rindler space illustrates how motion influences what we see and measure in the universe, providing insight into the nature of horizons and the behavior of particles under acceleration.