How long is 1 light year?

Answer 1

1 light year = 5.87849981 × 10^12 miles

Answer 2

A light year is the distance traveled by a light ray in one year.

Light has a speed of 186,000 miles per second or 300,000 kilometers per second. One light year is 365 days x 86,400 seconds/day = 31,536,000 seconds x 186,000 miles/sec =5.866 x 10^12 miles!

To give an idea, the sunlight reaches earth in only 8 min 20 sec, while the light from nearest star, proxima century takes 4 & half light years!

Answer 3

A light year is a measure of distance.

1 light year is the distance light travels in a year

Answer 4

One light year :
It is the distance that can be cut by a light ray in one year
= (3*10^8) * (365*24*60*60) = 9.4608 * 10^15 meters

Answer 5

5,850,000,000,000 (almost 6 trillion miles)
The shuttle orbits the earth at 5 miles per second (180,000 mph). Light travels at 186,000 miles per second, which is about 37,200 times faster than the shuttle. So the shuttle would need about 37,200 years to go 1 light-year.

Answer 6

The official light year is that used by astronomy =365.25 days. it is used as a matter of convenience as there are many description of what a year is.
The distance traveled by light in one year ,moving in local space whose speed is measured relative to the earth as a frame of reference =9.460730473 x 10^15 meters.
however , it is most concentionaly used in astronomy to measure celestial distance in Par sec. ,rather than light Year.

Answer 7

365 days....
the distance light travels in 1 year is d = vt (in meters)

d = (3.00 x10^8 m/s)(365x24x60x60)

Answer 8

goes faster than 1 dark year!





sorry :( :)