In reality, light travels at nearly 300,000,000 meters per second. One of the fastest man-made objects ever, NASA’s Voyager 1 probe, only travels at 17,000 meters per second.

All matter moves through space-time at the universal constant— the speed of light— but this speed is shared between motion in space and the flow of time. Objects don’t speed up beyond light ...

Equipment found in any college science department can be used to transmit electric signals at four times the speed of light. Close. Advertisement. Skip to content. Sign in. Search the website.

The speed of light, about 300,000 km/s, is the speed light travels in a vacuum. In a medium such as glass, it goes about 30 percent slower, a mere 200,000 km/s.