Calculate the number of miles in a light-year, using 1.86 x 10^5 mi/s as the speed of light.
To calculate the number of miles in a light-year, we first need to determine how many seconds are in a year.
There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.25 days in a year (accounting for leap years). Therefore, the total number of seconds in a year can be calculated as follows:
60 seconds/minute * 60 minutes/hour * 24 hours/day * 365.25 days/year = 31,557,600 seconds/year
Now that we have the total number of seconds in a year, we can calculate the number of miles in a light-year:
1.86 x 10^5 mi/s * 31,557,600 s/year = 5.88 x 10^12 miles/year
Therefore, there are approximately 5.88 trillion miles in a light-year.