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A light-year is the distance light can travel in one year. Light travels at 186,000 miles per second. Multiply that by 3600 seconds in an hour and then by 24 hours in a day and 365 days in a year and you will get the distance in one light-year.

A light year is defined as 9,460,730,472,580,800 meters exactly, derived

from the distance that light travels in vacuum in one Julian year.

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11y ago
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13y ago

A light year is simply the distance that light travels in 1 year.

About 9.47x10^15 metres

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11y ago

A light year is a year.

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Q: How long is a light year what does a light year describe?
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Related questions

What is a light year and why do scientist use it?

A light year is a measure of how far light can travel in one year. It is a phenomenal distance, and is used to describe how far away stars are from us.


How do astronomers describe distance?

Using light years, which means the distance light travels in a year.


What is a light year used for?

A light year is a measure of distance and is the distance light travels in one year's time. The light year is used to describe the enormous distances between various objects in space. In one year, light travels about 6 trillion miles.


What is the longest light year?

A light-year is a measure of distance that a photon of light will travel in one year .


How long is a light year in nanometers?

1 light year = 9.4605284 × 1024 nanometres


Why was 1905 an important year for Einstein?

1905 was important because in that year he made his scientific theories that describe about light


How much is 1 light year in standard form?

The question should be How Long is a light year (in standard form) as a light year is the DISTANCE that light will travel in one year No...I'm not sure what a light year would be in a leap year.


How long is a light year in human years?

1 year A light year is the distance light travels in 1 human year One light year is 186000 X 60 X 60 X 24 X 365 miles


How long does it take to see a light year?

One year.


What is 9460730472580800 meters long?

That's the approximate length of a light-year - the distance that light travels in a year.


What is a 'light year' and how long is it?

A light year is the distance light travels in a vacuum (such as space) in one year's time. It is equal to 5,878,499,562,554.681 miles or 9,460,528,000,000 kilometers.


What units are for distance between stars?

The correct unit to describe the distance between stars is the "light year", the distance a photon of light would travel (through a vacuum) in a year.