Define light year. What is expressed in light years?

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Solution

A light-year is the unit of distance.
A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year.
One light-year is close to 6 trillion miles.
$1 l i g h t y e a r = 9.86 \times 10^{15} m$ .

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Define light year. What is expressed in light years?

A light-year is the unit of distance. A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year.One light-year is close to 6 trillion miles. 1lightyear=9.86×1015m.

A light-year is the unit of distance.
A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year.
One light-year is close to 6 trillion miles.
$1 l i g h t y e a r = 9.86 \times 10^{15} m$ .