Light years are used to measure the great distances of space. One light year is about 5.86 trillion miles. This is the distance light travels in one year's time.
In our galaxy, we typically use light-years to measure vast distances across space. A light-year is the distance that light travels in one Earth year, roughly equal to about 9.5 trillion kilometers.
587 light years is a unit of distance, not time. It represents the distance that light travels in 587 years.
light years
You don't really. You can just as well use the SI unit of length - the meter - and express the numbers in scientific notation. But most people prefer the smaller numbers that appear when using light-years or parsecs.
To measure the distance of stars you have to measure by light years.
Light years are used to measure distance from Earth to distant stars and planets.
you use light years, and other units
one way is how far light travles in a year , (light years)
Light years, parsecs, and kiloparsecs. Light years and parsecs are used to measure distances between neighbouring star system's, kiloparsecs are used to measure distances within a galaxy.
No, 'years' is a measure of time and 'light years' is a measure of distance.
They don't. Light years are a distance measurement, not a time measurement.
Light years are used to measure the great distances of space. One light year is about 5.86 trillion miles. This is the distance light travels in one year's time.
Light Years.
Usually light-years, or parsecs.
Light years
Light years. Strictly speaking, professional astronomers use "parsecs". However they also use light years, which are better known to most people.