How far does a light year travel in a year?

Answer 1

"100 light years" is a distance; specifically, the distance light travels in 100 years.

The distance is roughly equal to 587,845,000,000,000 miles. (rounded)

Answer 2

It takes 4.22 years. That star is Proxima Centauri, one of the three stars of the Alpha Centauri system. It is 4.22 light years away, which by definition means that it takes 4.22 years for light to travel from it to the Earth. The Alpha and Beta components of this triple star system are a little farther away at this time, 4.37 light years.
Unless, of course, you include our own yellow dwarf star (Sol) which is only eight and a half light minutes away.

Answer 3

One light-year. Light travels about 186,000 miles per second, or 300,000 km per second, so the calculation would be fairly simple;

186000 * 60 * 60 * 24 * 365.24

Did you know that Google is a calculator? It is. I copied that equation into Google and got the following answer:

Answer 4

The nearest star is the Sun , and a photon of light takes about 8 minutes to reach the Earth.

The next nearest star is 'Alpha- Centuri' and a photon of light takes about 4 0 5 years to reach Earth.

Answer 5

One light year is equal to about Ten Trillion Kilometers; you can multiply the rest out.

(Addition to answer: Putting it in terms of miles or kilometers is not very practical though. A better unit of distance to use might be the Parsec. One Parsec is about 30 trillion kilometers. 100,000 light years is about 30,700 Parsecs... in other words a very, very long way.

Our Milky Way galaxy is thought to be about 100,000 LY across. I haven't done the math for myself but I remember reading that to cross our galaxy at a speed of 100 km/hr would take something like 1.7 trillion years.) 100,000 x 365.25 x 24 x 60 x 60 x speed of light - i.e. quite a distance.

Answer 6

A light-year is a measure of DISTANCE, not time. One light year is the distance that light would travel in one year. Light travels at approximately 186,000 miles per second, or 300,000 kilometers per second.

Answer 7

On average throughout the year, about 8minutes 19seconds , because of

the slight variation in the sun-Earth distance during the year.

"150 million kilometers" = 8minutes 20.3seconds at light speed in vacuum

Answer 8

The light of a star 10,000 light-years away takes 10,000 years to get here.

A light-year is the distance that light travels in one year. It's a pretty long distance. Light travels at about 186,000 miles per SECOND, or 300,000 kilometers per SECOND. There are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.24 days per year. Multiply all those numbers together.

We use light-years to measure the distance between different stars. Within the solar system, we typically measure things in Astronomical Units, where the distance between the Earth and the Sun is one AU. For comparison, this is 500 light-SECONDS.

Answer 9

The most distant object visible to the naked eye is the Andromeda Galaxy at about 2.5 million light years. In theory, there should be no limit other than the physical size of the universe provided the object is bright enough.

Answer 10

The term light year is a measure of distance, so this star is 100 light years away, assuming it hasn't moved further away or gotten closer in the 100 years it took for its light to reach earth.

A light year is approximately 9.4605284 × 1015 meters, so a 100 light years would be a hundred times that.

That's approximately 0.946 quadrillion kilometers.