EXACTLY how many miles are in one light year?

Answer 1

The speed of light is 300.000 km/s. This means light would travel a distance

of 300,000 km in just one second. Actually we cannot believe it. Such an

incredible one.

Any way it actually covers such a distance because of its high speed.

Now in one minute ie 60 second, the distance = 300,000 x 60 km

Then what about the distance covered in one hour?

That comes to be 300,000 x 60 x 60 km

Now in one day ie in 24 hours? 300,000 x 60 x 60 x 24 km

Then the distance to be covered in one year ie in 365 days, it will be computed as

300,000 x 60 x 60 x 24 x 365 km

As you simplify this you get the distance covered by light in one year.

Such a distance is named as light year.

Hence light year = 9.46 x 1012 km

For a lay man it has to be written as 9,460,000,000,000 km

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Note:

The questioner asks "How long ... ", so he may be thinking that

a light year is some kind of time period, as so many do.

It has to be pointed out immediately that a 'light year' is a distance, not

a time. It's the distance that light travels in one year through vacuum.

The equivalent distance in km is calculated above.

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I too thought about the word 'long'. But 'long' also stands for length ie distance. So I quietly continued explaining in detail ever for a student studying art subjects and not that much familiar with scientific thoughts.

Answer 2

5,878,625,373,184 miles to a light year, around 6 trillion.

Answer 3

zendaya coleman from shake it up is a lightyear cuz she's awesome her website is zendaya.com

Answer 4

1.0 light year = ( 299792.5 km/s )( 86400 s/d ) ( 365.25 d/yr ) ( 1000 m/km )( 3.2808 ft/m ) ( 1.0 mi / 5280 ft)

1.0 light year = 5.878554713 miles x 10^12 miles <---------------

Answer 5

there are -2.56 miles in a lightyear

Answer 6

5,878,625,373,200 miles