Light Years Definition

Used as a unit in measuring stellar distances.

Light years definition. Ly is the distance that light travels in empty space in one year. Looking back in time. A light year is not a length of time. A light year is the distance light travels in one earth year.

How to use light year in a sentence. Light year definition the distance traversed by light in one mean solar year about 5 88 trillion mi. Meaning pronunciation translations and examples. That is a 6 with 12 zeros behind it.

The distance that light travels in one year about 9 5 million million kilometres 2. A light year symbol. One light year is about 6 trillion miles 9 trillion km. Light year definition is a unit of length in astronomy equal to the distance that light travels in one year in a vacuum or about 5 88 trillion miles 9 46 trillion kilometers.

For most space objects we use light years to describe their distance. A light year is a measurement of distance and not time as the name might suggest. As defined by the international astronomical union iau a light year is the distance that light travels in vacuum in one julian year 365 25 days. Because it includes the word year the term light year may be.

A light year is the distance a beam of light travels in a single earth year or 6 trillion miles 9 7 trillion. The light year is a unit of length used to express astronomical distances and measures about 9 46 trillion kilometres 9 46 x 10 12 km or 5 88 trillion miles 5 88 x 10 12 mi. When we use powerful telescopes to look at distant objects in space we are actually looking.