noun a unit of astronomical distance equivalent to the distance that light travels in one year, which is approximately 5.88 trillion miles
A light year is a unit of distance, not time, representing the distance that light travels in one year, approximately 9.461 trillion kilometers.
In physics, the concept of a light year is used to understand the vast distances in space and the speed of light as a constant.
In science fiction literature and films, the term 'light year' is often used to describe journeys through space at speeds close to the speed of light.
Astrophysicists use light years to measure distances between celestial objects and to study the expansion of the universe.
Cosmologists utilize light years in their calculations to determine the age and size of the universe.
In science fiction writing, authors often use the term 'light year' to describe vast distances between planets or galaxies.
Astronomers use the term 'light year' to measure the distance that light travels in one year, which is approximately 9.461 trillion kilometers.
Physicists use 'light year' as a unit of distance in their calculations and research, especially when studying the vastness of the universe.
Science educators use 'light year' to teach students about the scale of the universe and the concept of astronomical distances.