Light-year

URI(s)
- http://id.loc.gov/authorities/subjects/sh85076912
- info:lc/authorities/sh85076912
- http://id.loc.gov/authorities/sh85076912#concept
Instance Of
Scheme Membership(s)
- Library of Congress Subject Headings
Collection Membership(s)
- LCSH Collection - Authorized Headings
- LCSH Collection - General Collection
Variants
- Lightyear
Broader Terms
- Astrophysics
- Units of measurement
Sources
- found: Barnhart, R.K. Dict. of science (light-year (Astronomy): the distance that light travels in a vacuum in one year: about 9.5 trillion kms. or almost a third of a parsec. Light-years are used to measure distances to or between stars)
- found: Wikipedia, Apr. 23, 2007 (light-year: a light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year)
Example Notes
- Example under [Units of measurement]
Change Notes
- 1986-02-11: new
- 2007-05-25: revised

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