You have asked the following question what is a light year
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• A Light Year is the Distance that Light can travel in a Year or 
• Calculations are approximately done the Distance traveled by Light in a Year is 9 trillion km 9.461e 12 
• A light-year is the Distance a beam of Light travels in a single earth Year or 6 trillion miles 9.7 trillion kilometers . 
• 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 
• A Light Year is 5 865 696 000 000 miles 9 460 800 000 000 kilometers 
• A Light Year is a way of measuring Distance 
• Year is a measurement of time and a Light Year is a measurement of length 
• A light-year is the Distance Light travels in one earth Year 
• A light-year is the Distance Light travels in one Year 
• A light-year is the Distance a beam of Light travels in a vacuum in one Year 
• 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 
• 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 
• So one Light Year is equal to 9.4608×10 12 km 
• Now to answer your question Light Year is used for measuring distances though the term is misleading 
• Question 1 Light Year is equal to how many Years of the earth 

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

## 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 
• The fastest-moving stuff in the universe 

## 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 
• Because of the finite speed of Light It can take more than 20 minutes to send a signal to the curiosity rover on mars 

## Light years

• Let's say that a star is 1 million Light Years away 
• 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 
• Abbreviations used for Light Years and multiples of Light Years are 
• Even so Light Years measure Distance 
• There are 33 stars within 12.5 Light Years of our sun 

## Light second

• Therefore a Light Second is 186 000 Miles 300 000 kilometers 
• We simply say it is 1.2 Light Second away 

## Year is

• A Light Year Is the Distance that Light can travel in a Year or 
• Calculations are approximately done the Distance traveled by Light in a Year Is 9 trillion km 9.461e 12 
• A light-year Is the Distance a beam of Light travels in a single Earth Year or 6 trillion Miles 9.7 trillion kilometers . 
• 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 
• A Light Year Is 5 865 696 000 000 Miles 9 460 800 000 000 kilometers 
• A Light Year Is a way of measuring Distance 
• A measurement of Time and a Light a measurement of length 
• A light-year Is the Distance Light travels in One Earth Year 
• A light-year Is the Distance Light travels in One Year 
• A light-year Is the Distance a beam of Light travels in a vacuum in One Year 
• 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 

## Year as

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

## Relevant Images

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