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Light years is a measure for distance, the distance light travels in one year. For the light to travel 587 light years, it takes 587 years.
One light year is the distance that light travels in one year, which is approximately 5.88 trillion miles. Therefore, to travel a distance equivalent to 2.5 Earth years, you would need to travel about 2.5 light years, which is roughly 14.7 trillion miles.
Light-years is a distance, not a time measurement. If you are asking how many light-years a person would have to travel to be outside of the Milky Way galaxy, the answer depends on the "direction" one wishes to use when exiting. The Milky Way, relatively speaking, is almost flat, with a thickness of only 9.26 quadrillion kilometers which is roughly 1000 light-years. While this sounds like a large distance, compare that to the width which is between 9,260 to 11,353 quadrillion kilometers or 100,000 to 120,000 light-years across. Therefore, if you went the thin way, it would be a maximum distance of 4.63 quadrillion kilometers or 500 light-years. If you went the thick way, the distance would be sufficiently larger.
Only one. Because Light year is a messure of distance not of time. Light year is the distance travelled by light in one year.
An object that is 8,000 light years away from Earth will take 8,000 years to reach us if it travels at the speed of light. Since nothing can travel faster than light according to our current understanding of physics, this distance would require that same amount of time, 8,000 years, for light (or anything traveling at that speed) to cover the distance to Earth.
That would be "Beta Centauri". Wikipedia lists its distance as 350 ± 20 light-years. Wolfram Alpha lists a the distance as 397.4 light-years.
It takes light 40 years to travel a distance of 40 light years.
Light years is a measure for distance, the distance light travels in one year. For the light to travel 587 light years, it takes 587 years.
The distance of one light year, in light years, is exactly 1.
A light-year is a distance, not a year. 16 light-years is the distance light can travel in 16 years - 94,058,003,200,000 miles.
A light year is a measure of distance, not time. It is the distance light travels in a year.
Light years is a term that actually measures distance.
Zero. Light years are a measure of distance, not time.
Years are a measurement of time; light years are a measurement of distance. A light year is the distance light travels in one year (in a vacuum).
Voyager 1 was able to perform measurements and establish the distance as 121 AU (18 billion km). This would make the distance about 0.0019 light years.
None. A light year is a measure of distance, not of time.
One light year is the distance that light travels in one year, which is approximately 5.88 trillion miles. Therefore, to travel a distance equivalent to 2.5 Earth years, you would need to travel about 2.5 light years, which is roughly 14.7 trillion miles.