3,725,647.941 miles.
186.2824 miles.
Speed doesn't travel. Light travels.Light goes about 300,000 km in a second; in an hour, it goes 3600 times as far, since an hour has 3600 seconds.
Light travels approximately 186,282 miles per second. So, in 20 seconds, light would travel around 3,725,640 miles.
As far as light can travel
An au is an astronomical unit, or how far light will travel in a year.
Speed of light 3.0*10^8 m/s times 5 seconds = 15*10^8m
In a vacuum, light travels about 3,725,648 miles every 20 seconds. In scientific notation this distance is expressed as: 3.725648 x 106 miles per 20 seconds.
How far does light travel in one hour
500 light seconds = 149,896,229 kilometers
Light travels at a speed of approximately 186,282 miles per second. Therefore, in two seconds, light would travel around 372,564 miles.
The Sun is 92,700,000 miles from Earth, and it takes light 499 seconds to come that far, so another answer is "499 light-seconds."
Twenty Miles