Special relativity experiments

Special relativity experiments confirm that the laws of physics are the same for all observers moving at constant speeds and that the speed of light is always constant. Key tests include the Michelson-Morley experiment, which showed no change in light’s speed regardless of Earth's motion, and time dilation observed with atomic clocks flown in airplanes, which run slightly slower than those on the ground. Additionally, particle accelerators demonstrate that particles gain mass as they approach light speed. These experiments show that space and time are interconnected, leading to our understanding of how the universe operates at high velocities.