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en.wikipedia.org/wiki/Light-year

... fractions of a light year, and are usually expressed in astronomical units. ... is also used occasionally for approximate measures.

starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second.

earthsky.org/space/what-is-a-light-year

Feb 20, 2013 ... Hint: A light-year is a unit of distance, not time. ... A light-year is how astronomers measure distance in space. It's defined by how far a beam of ...

www.telescope.org/nuffield_21_sci/astrounits.htm

How Distances are Measured in Astronomy. Dealing with ... AU (astronomical units) ... The light year is is the distance that light travel in one year (365 1/4 days) .

units.wikia.com/wiki/Light-year

The original article was at Light-year. The list of authors can be seen in the page history. As with the Units of Measurement Wiki, the text of Wikipedia is available ...

physics.stackexchange.com/questions/17968/how-light-years-is-measured

We don't directly measure distances to anything light years away by timing light. " Light year" is just a unit of distance like a mile or kilometer.

science.howstuffworks.com/dictionary/astronomy-terms/question94.htm

A light year is a way of measuring distance. That doesn't make much sense because "light year" contains the word "year," which is normally a unit of time.

coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/distance.html

In astronomy, the most commonly used measures of distance are the light year, parsec and astronomical unit. Astronomical Unit (A.U.) An astronomical unit ...

theconversation.com/explainer-light-years-and-units-for-the-stars-16995

Aug 19, 2013 ... The starting point is the Astronomical Unit, often abbreviated to AU. ... The light- year is a more comprehensible measure of distance than the ...

www.quora.com/What-is-a-lightyear-Is-it-a-unit-of-time-or-distance

A Light-year is a unit of distance. It is defined as the distance light travels in one year. ... Lightyear is basically a distance/ displacement used in measuring seperation between two planets , solar systems, stars and galaxies in ...