Awasome Half Of Light Speed Miles Per Hour References. This phenomenon causes the refraction of light. That's about 186,282 miles per second — a universal constant known in.
With this speed, one can go around the globe more than 400,000 times in a minute! Typical units are kilometers per hour (kph), miles per hour (mph), meters per second (m/s), and feet per second (ft/s). This is more than 10,000 times faster than a commercial jet.
