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Never heard of ostranamas, but astronomers use light years to measure distances in space. A light year is the distance that light can travel (in a vacuum( in a year and is slightly less than 2.4 trillion kilometres.

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13y ago

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How many second in a light year?

A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles. A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles.


Is a light year measured in energy produced?

No. A light year is a measure of distance. It is the distance light travels in a year.


Is a light year 235 days?

No. A light year is a measure of distance, not time. It is how far light travels in a year.


What do light years measure?

A light-year is a measure of distance, not time as many people mistakenly believe. One light-year is the distance light can travel in one year in the vacuum of space. One light-year equates to 5.8785 trillion miles.


Is light year per hour is a measure of speed?

Well... yes, but it's not a very useful one. Light travels one light year in... one year. So the speed of light (which you cannot accelerate to) is about 1/8766 light years per hour.


What is distance to stars usually called?

light year the DISTANCE light travels in a year so 'light year' is not a measure of time.


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

A light year is the distance that light travels in a year. We use it because it allows us to measure huge distances.


A unit ight-year is a measure of?

The light-year is a measure of distance. It's the distance light travels in vacuum in one year. 5.8787 x 1012 miles (rounded)


How many days equals one light year?

None. A light year is a measure of distance, not of time.


How many years are in a light year give you a number?

None. A light year is a measure of distance, not of time.


Does light year denote distance on earth?

No. A light year measures such large distances that it would be highly impractical to measure anything on Earth. The light year is used to measure distance in space beyond the solar system.


What is the difference between a light year and a year?

A light year is actually a measure of distance. it's the distance that light travels in one earth-year. A year is a measurement of time equal to the amount of time that it takes the earth to go around the sun once.