Definition of Light-year
a distance of space used by Astronomers
Examples of Light-year in a sentence
The scientists tried to predict if the star was a light-year away or further.
A light-year is around 5.9 trillion miles and used to measure how far things are apart in space.
Penny’s science teacher added the term ‘light-year’ to the board and explained that this astronomical word is linked to space distance.
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