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The distance of a light year. How long would it take the space shuttle to go one light-year? The shuttle orbits the Earth at about 5 miles per second (18,000 mph). Light travels at 186,000 miles per second, which is about 37,200 times faster than the shuttle. So the shuttle would need about 37,200 years to go one light-year.
1 light year is 5.878625 trillion miles 5878625000000 miles in one light Year Divided by 36,373 (the speed of New Horizons) = 161620570.203 Hours Divide Hours by 24 to get days = 6734190.42513 Days Divide Days by 365 to get Years = 18449.8367812 Years. It will take New Horizons, our fastest space craft, 18,450 years to go ONE light year.