What Is A Light Year

What Is A Light Year. He measured the distance to a star called 61 cygni, and got a distance of 660,000 times the earth's orbital radius. Ly) is a unit of length, equal to just under 10 trillion kilometres (10×1015 metres, 10 petametres or about 6 trillion miles).

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It's important to specify a vacuum because light slows as it passes through any. Ly) is a unit of length , equal to just under 10 trillion kilometers (10×10 15 meters, 10 petameters or about 6 trillion miles). A light year is a way of measuring distance.

Have you ever heard somebody say that something is light years ahead of its time?

Aren't so many zeroes astonishing? But what is it and how does it work? An image of distant galaxies captured by the nasa/esa hubble space telescope. Light years are actually a measure of distance that uses light as a standard.

Dr tim o'brien from the jodrell bank centre for astrophysics at the university of manchester explains.

Or maybe your kids like to complain in the car that the fun and relaxing family road trip you're taking isn't so fun and relaxing.

1 lightyear is 9,460,730,472,580.8 kilometers.

A light year is the distance that light travels in one year through vacuum or empty space.

So remember, a light year is a unit of distance rather than a unit of time, even though time is important to the measurement.

A light year is 5,878,625,373,183.6 miles.

Think of it as the bigger, badder cousin of the inch, the mile, the kilometer, and the furlong.

But what is it and how does it work?

In terms of our own solar system.