The distance light travels in an hour. This unit is not used as frequently as the light-year, for example. Distances within the solar system might be expressed in light-hours, but another unit - the astronomical unit - is more commonly used.
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1 light-hour = 1.07925285 × 109 kilometers.
The speed of the light is 3.10^8 miles per second.what is the speed in miles per hour
Light travels at a speed of 186,000 miles per second or 669,600,000 miles per hour. Light travels somewhat slower when it is "in" something, such as glass or water.
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1 nautical mile = 1852 meters Speed of light = 299 792 458 m / s Speed of Light = (299792458/1852) nautical miles / second One hour has 60 minutes, each has 60 seconds. 60x60 = 3600 seconds in a hour. In 1 second, light travels 299792458/1852 nautical miles. In 3600 seconds, light travels (299792458/1852)x3600, which is approximately: 582749918,3585 nautical miles / hour