Light-year
תיאור Storyboard
A astronomical unit of distance equal to 9.5 trillion kilometers (5.9 trillion miles). It is defined as the distance light travels in an Earth year.
טקסט Storyboard
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- LIGHT- YEARA astronomical unit of distance equal to 9.5 trillion kilometers (5.9 trillion miles). It is defined as the distance light travels in an Earth year.