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What Is a Light-Year? | NASA Space Place – NASA Science for Kids
One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion. - ppt download
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How long is a light-year?
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What Is a Light-Year? | NASA Space Place – NASA Science for Kids
One light year is equal to how many kilometers, how many years of earth
What Is a Light-Year? | NASA Space Place – NASA Science for Kids
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What is a light-year and how is it used??
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Space Space is HUGE! Distances in Space Astronomical Units Light Years - ppt video online download
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Convert Light-year to Kilometer - ExcelNotes
