A light-year is the distance light travels in one year. It's 9.5 trillion (9,500,000,000,000) kilometers.
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Light-year
Synonyms for "light-year" (6 found)
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1 entriesastronomy unit
Sample sentences
3 total sentences available.
A light-year is a unit of distance. It is the distance that light can travel in one year.
Source: tatoeba (3961580)
What does the expression light-year mean?
Source: tatoeba (11196700)