Answer to Question 9

Light travels 1.86 × 10⁵ miles per sec.

Determine the number of seconds in a year.
60·60·24·365 = 31536000 seconds in a year 
or 3.1536 × 10⁷ seconds

Multiply the speed of light times the number of seconds:
(1.86 × 10⁵) • (3.1536 × 10⁷) =
5.865696 × 10¹² miles
or
5,865,696,000,000 miles!

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