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Convert light year (light year)

Light year is a unit of measurement of length. The definition for light year is the following:
A light-year is equal to the distance light travels in vacuum in 365.25 days.
Light-year, also known as lightyear or light year, is a length unit commonly used in astronomy to measure distances between stars.

It is defined as the distance light travels in vacuum in 365.25 days or a Julian year, as defined by the International Astronomical Union. This distance is equal to 9.460 730 472 5808 × 1015 meters (almost 10 trillion kilometers).
The symbol for light year is ly
Light year is compatible with the metre base unit.

Additional unit information

light year conversion calculator
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