You have asked the following question *what is a light year*

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## Answers

We believe the answer should be around the following lines

- A
**Light****Year**is the**Distance**that**Light**can travel in a**Year**or [6] - Calculations are approximately done the
**Distance**traveled by**Light**in a**Year**is 9 trillion km 9.461e 12 [10] - A light-year is the
**Distance**a beam of**Light**travels in a single earth**Year**or 6 trillion miles 9.7 trillion kilometers . [2] - 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 [3] - A
**Light****Year**is 5 865 696 000 000 miles 9 460 800 000 000 kilometers [6] - A
**Light****Year**is a way of measuring**Distance**[6] -
**Year**is a measurement of time and a**Light****Year**is a measurement of length [10] - A light-year is the
**Distance****Light**travels in one earth**Year**[1] - A light-year is the
**Distance****Light**travels in one**Year**[7] - A light-year is the
**Distance**a beam of**Light**travels in a vacuum in one**Year**[9] -
**Light**travels at 300 000 kilometers per second and the**Distance**it travels in a single**Year**is 9 460 730 472 580.8 kilometers [10] - In reverse if it took us 40
**Years**to travel the**Distance**1**Light****Year**is then our rocket power can travel 1 40th of the speed of**Light**[10] - So one
**Light****Year**is equal to 9.4608Γ10 12 km [10] - Now to answer your question
**Light****Year**is used for measuring distances though the term is misleading [10] - Question 1
**Light****Year**is equal to how many**Years**of the earth [10]

More detailed answers below ...

## Light travels

- A light-year is the
**Distance**a beam of**Light****Travels**in a single**Earth****Year**or 6 trillion**Miles**9.7 trillion kilometers . [2] - 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 [3] - A light-year is the
**Distance****Light****Travels**in**One****Earth****Year**[1] - A light-year is the
**Distance****Light****Travels**in**One****Year**[7] - A light-year is the
**Distance**a beam of**Light****Travels**in a vacuum in**One****Year**[9] - At 300
**000**kilometers per second and the**Distance**it**Travels**in a single**Year**is 9 460 730 472 580.8 kilometers [10] -
**Light****Year**is nothing but the**Distance**that the**Light****Travels**in**One****Year**[10] - Approximately
**One**foot in a nanosecond the term light-foot is sometimes used as an informal measure of**Time**[3] - A light-second is the
**Distance****Light****Travels**in**One**second or 7.5 times the**Distance**around earthβs equator [7] - In a vacuum
**Light****Travels**at 670 616 629 mph 1 079 252 849 km h [2] - At a speed of 186
**000****Miles**or 300**000**km per second [1]

## Light is

- Unlike the speed of your car when running errands the speed of
**Light****Is**constant throughout the universe and**Is**known to high precision [2] - The fastest-moving stuff in the universe [7]

## Light it

- If we had a spaceship that can travel the speed of
**Light****It**will take us 1**Year**to travel 1**Light****Year**[10] - Because of the finite speed of
**Light****It**can take more than 20 minutes to send a signal to the curiosity rover on mars [2]

## Light years

- Let's say that a star is 1 million
**Light****Years**away [6] - If we aimed a telescope at a planet that was
**Light****Years**away and it hit a mirror aimed perfectly at**Earth**could we see into our past [10] - Abbreviations used for
**Light****Years**and multiples of**Light****Years**are [3] - Even so
**Light****Years**measure**Distance**[6] - There are 33 stars within 12.5
**Light****Years**of our sun [7]

## Light second

- Therefore a
**Light****Second**is 186**000****Miles**300**000**kilometers [6] - We simply say it is 1.2
**Light****Second**away [10]

## Year is

- A
**Light****Year****Is**the**Distance**that**Light**can travel in a**Year**or [6] - Calculations are approximately done the
**Distance**traveled by**Light**in a**Year****Is**9 trillion km 9.461e 12 [10] - A light-year
**Is**the**Distance**a beam of**Light**travels in a single**Earth****Year**or 6 trillion**Miles**9.7 trillion kilometers . [2] - 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 [3] - A
**Light****Year****Is**5 865 696**000**000**Miles**9 460 800**000**000 kilometers [6] - A
**Light****Year****Is**a way of measuring**Distance**[6] - A measurement of
**Time**and a**Light**a measurement of length [10] - A light-year
**Is**the**Distance****Light**travels in**One****Earth****Year**[1] - A light-year
**Is**the**Distance****Light**travels in**One****Year**[7] - A light-year
**Is**the**Distance**a beam of**Light**travels in a vacuum in**One****Year**[9] -
**Light**travels at 300**000**kilometers per second and the**Distance**it travels in a single**Year****Is**9 460 730 472 580.8 kilometers [10]

## Year as

- Using a
**Light****Year****As**a**Distance**measurement has another advantage -- it helps you determine age [6] - In 1868 an english journal labelled the light-year
**As**a unit used by the germans [3]

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## Relevant Images

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source:https://cdn.mos.cms.futurecdn.net/4vt6ZY5nzGECaFA5zbJFeE-1200-80.jpg

source:https://upload.wikimedia.org/wikipedia/commons/d/d3/12lightyears.gif

## References

- https://spaceplace.nasa.gov/light-year/en/
- https://www.space.com/light-year.html
- https://en.wikipedia.org/wiki/Light-year
- https://www.youtube.com/watch?v=ewGsiUPeBD4
- https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html
- https://science.howstuffworks.com/dictionary/astronomy-terms/question94.htm
- https://earthsky.org/astronomy-essentials/how-far-is-a-light-year
- https://www.merriam-webster.com/dictionary/light-year
- https://www.nbcnews.com/mach/science/what-light-year-ncna931656
- https://www.quora.com/1-light-year-is-equal-to-how-many-years-of-the-Earth

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