Alternate Definitions for Light year

include archived terms
Term: Light year
Definition:

The distance that light travels in one year at about 300,000 km per second, i.e. 9.5 x 10^12 km. It is equal to about 63,000 astronomical units.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
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