Q991

{"type":"item","id":"Q991","labels":{"en":{"language":"en","value":"light-year"}},"descriptions":{"en":{"language":"en","value":"unit of length used to express astronomical distances, defined as the distance that light travels in a vacuum in one year"}},"aliases":{"en":[{"language":"en","value":"ly"},{"language":"en","value":"light year"},{"language":"en","value":"lightyear"},{"language":"en","value":"l.y."},{"language":"en","value":"light-years"},{"language":"en","value":"lightyears"},{"language":"en","value":"light years"}]},"claims":[],"sitelinks":[]}