alt label |
|
||||||
---|---|---|---|---|---|---|---|
dcterms modified | |||||||
broader |
|
||||||
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. | ||||||
type |
|
||||||
contributor | AAS_Frey.Katie original |