The speed of light in a vacuum is a universal constant, with a value of 299,792,458 meters per second. Nothing in the universe that has mass can, even theoretically, exceed this speed.
The speed of light is so fast that it has become a convenient standard for measuring the vast distances in the solar system and beyond it. The distance between the Earth and the Moon, for example, is slightly less than 1 light-second. Light from the Sun takes 8 minutes to reach the Earth, and it takes around 1 hour to pass by the orbits of Jupiter and Saturn.Learn More
The speed of light is 186,282 miles per second. An object travelling at the speed of light would make approximately 7.5 rounds around the Earth in one second.Full Answer >
In a vacuum, the speed of light is 186,282 miles per second. This is equal to 299,792 kilometers per second or about 670,616,629 miles per hour.Full Answer >
Although both sound and light are fast by human standards, light is far faster than sound because waves of sound must propagate through a medium, while the speed of light is tied to fundamental universal constants. Light travels at about 300,000 kilometers per second, and the speed of sound is usually around 300 meters per second.Full Answer >
The speed of light is about 670,616,629 mph, and one could travel round the earth 7 1/2 times in just a second with this speed. For another perspective, the average distance from the Earth to the Moon is 238,854 miles, and light travels this distance in just one second.Full Answer >