Question

distance travelled by light in a vaccum in one tropical year

Answer 1

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• As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).

• Because it includes the word "year", the term light-year may be misinterpreted as a unit of time.

Answer 2

Answer:

About 6 trillion miles

For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it

Explanation: