Lisa Simpson's Presentation

no it isnt.

Light-year
The light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers or 5.88 trillion miles. As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year.Wikipedia

how can light year be a year if it is not even a measure of time