The question and answer are locked and cannot be edited.

# What is a light year?

# Is a light year the speed that light travels in one year?

a light-year is the distance that light travels in a vacuum in one year..

# How many light kilometers in a light year?

9,460,528,000,000 km

# What is a light - year?

A light-year is the distance that light travels in a year. Light travels about 300,000 kilometers a second, so in a year, light will travel about 9.5 x 10 12 kilometers (9.5 …million million kilometers), or 9.5 x 10 15 meters.

# What is a Light-year?

A light year is a unit of distance. It is the distance that light will travel in one year. There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. The… year is 365.24 days long. Light travels at 186,000 miles per second, or 300,000 km per second. Just multiply all those numbers together.

# What is light years?

is the distance light travels in one year

# What is light year?

"Light year" is a distance. It's defined as the distance light travels in one year, through vacuum. That's a huge distance compared to the daily experience of human beings… ... about 5,874,600,000,000,000 miles, or more than 31 thousand round trips to the sun and back. It's used in discussion of the distances between objects in space, and it actually turns out to be not a so large a unit at all. The nearest star outside of our solar system is about 4.2 light years distant from us, and the nearest galaxy outside of our Milky Way is about 2.5 million light years distant from us.

# Which light is used to calculate light year?

It doesn't matter what light is used, as the speed of light in a vacuum is the same for any wavelength of light. The speed of light, c (3 x 10^8 m/s) is a fundamental con…stant of nature and applies to all wavelengths of the electromagnetic spectrum - of which light is a small section. The speed of light, c can be calculated, without observation by measuring other constants through equations such as E=mc2 or, a product of the permativity and permability of free space, or Maxwell's equations. These sorts of equation relate particle physics to wave mechanics and show that an electromagnetic wave can be considered as particles and mass can be considered as waves.

# What is the speed of light in light years?

"Light Year" is not a speed. It's a length or distance, just like a foot or a mile or a kilometer. It is the distance that light can travel in one year. The speed of light is… about 186,000 miles (300 million km) per second. At that rate, the distance in one light-year is about: 5,878,700,000,000 miles ("5 trillion 878 million" etc.) 9,460,890,000,000 kilometers ("9 trillion 460 million" etc.) (This shows you why it would be tough to use miles or kilometers to talk about distances from earth to stars ... the numbers would be too hard to handle. That's why the 'light-year' was invented.) You might say the speed of light is 1 light-year per year

# Is a light-year the distance light travels in one year?

Yes. Other units such as miles, kilometers or astronomical units are too tiny to be practical in discussing the distances between the stars, or between the galaxies. One eve…n larger unit is often used in astronomical measurements, the "parsec". This is the distance of one "parallax second of arc", and is approximately equal to 3.26 light years. For long distances across the galaxy, some astronomers use "kiloparsecs" as a unit of measure, and for intergalactic distances some astronomers use "megaparsecs" or "Mpc".

# How many years in a light year?

A light year is not a period of time, but rather a distance, specifically the distance that light travels in one year through a vacuum. That distance is roughly 5.88 trill…ion miles or 9.46 trillion kilometers.

# How many light years is a giga light year?

Answer Giga is a prefix meaning billion. A giga-light-year is about 8% of the distance to the edge of the universe.

# How many light years in a year?

The distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometres.

Answered

In Astronomy

# How many light-years is a mega light-year?

Except in the world of computers in which "mega" means 2^20, the word "mega" means millions.

Answered

In Astronomy

# How many light minutes is in a light year?

The question actually makes technical sense, but that's probably not due to any fundamental comprehension on the part of the questioner. The 'light year' is not a length o…f time. It's a distance. The definition is: The distance that light travels in one year, when in a vacuum. Consistent with that system of nomenclature, we would have to admit that a 'light minute' is also a distance, and might similarly be defined as the distance that light travels in one minute, when in a vacuum. So, the question makes a kooky kind of sense, and the answer is: Since there are 525,931 minutes of time in one year of time, there are also 525,931 light minutes of distance in one light year of distance.

Answered

In Astronomy

# How do you convert light years to kilo-light years?

Divide by 1,000 . 3,120 lightyears = 3.12 kilo-lightyears

Answered

# How do you convert light years into years?

You can't. A light year is a measure of distance. A year is a measure of time. It's like asking how many miles in an hour. --------------------…----------- WRONG, whoever put that analogy is stupid. You can convert light years into years. Light year is the distance traveled by light in one year. Light travels at a speed of 186,282 miles per second and a year has 31,556,926 seconds. Thus light travels 5,878,499,817 miles in a year.

Answered

In Astronomy

# How Many light years in 11 light years?

As close as the largest observatories with state-of-the-art instruments of the greatest precision have been able to measure, the answer is virtually indistinguishable from… eleven ( 11.000 ).