Because we're creating a 95% confidence interval, this means we have two tails of 2.5%. When we look up 0.025 in the Z table (click to open) , we find that it corresponds to a z-score of 1.96. After plugging everything into the equation, we find a lower bound of 480.8 and an upper bound of 559.2.
As already noted, the speed of light (expressed in meters per second) means that light travels a distance of 9,460,528,000,000 km (or 5,878,499,817,000 miles) in a single year. This distance is known as a âlight yearâ, and is used to measure objects in the Universe that are at a considerable distances from us.
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.