The speed of light in a vacuum is often expressed in a simile as "faster than a speeding bullet." This analogy emphasizes the incredible speed at which light travels—approximately 299,792 kilometers per second (about 186,282 miles per second). Light's unmatched speed is fundamental in physics and several scientific theories, including Einstein's theory of relativity. It sets the universal speed limit for the transmission of information and matter, influencing many technological advances such as communications, GPS systems, and the understanding of space. Thus, this comparison showcases light's astonishing velocity in a relatable manner.