Cosmic speed limit

The cosmic speed limit is the fastest anything can travel in our universe, which is the speed of light—about 186,282 miles per second (299,792 kilometers per second). According to Einstein’s theory of relativity, nothing with mass can reach or exceed this speed because it would require infinite energy. This limit prevents information, matter, or energy from traveling faster than light, ensuring the structure of causality and the universe’s consistent laws. Essentially, it’s the universal barrier that keeps the fabric of space-time orderly.