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A light year is equal to just under 10 trillion kilometers.

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15y ago

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How is light years used in science measurement?

A light year is the distance light travels in a year. That is roughly 6,000,000,000,000 miles (six trillion miles). Thus such a unit is used only to measure the largest distances, those between stars and galaxies.


Approximately how many miles is one light-year?

Do the math. Light travels at 186,000 miles per second. There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.26 days in a year. Just multiply all those numbers together. It's a pretty big number.


What is the significance of the stars?

people call it a star but really it is supposed to be a shield (thats why its called the magain David) it was the shape of davids shield, the six points were to protect the head, shoulders, thighs and groin


How many years is 5000 light years?

Light travels at 186,282.397 miles per second (299,792,458 Kilometers / second).There are 31,556,736 seconds in a year. Therefore light will travel 5,878,464,423,576.192 (6 trillion) miles per year.So 3,000 Ly = 17,635,393,270,728,576 miles (28,381,414,355,691,264,000 kilometers)or 17.6 quadrillion Miles (28.4 quintrillion kilometers)


How long would it take to travel Mars in lightyears?

A light-year is not a measurement of time but of distance. How far light can travel in a year. Your question therefore asks about the distant between the Earth and Mars which varies with their orbiting about the sun.. However, Earth and Mars are never anywhere near a light year abart. At most, they are about 12 light minutes apart.