The distance travelled by light in a year in space.Remember, the velocity of light in space is always constant i.e, 300000000m/s.This method was introduced as it was impossible to measure the distance between stars with the old methods.
anonymous
2011-05-30 08:24:31 UTC
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.light takes 8minutes and 20 second to reach on earth surface from sun.
anonymous
2011-05-30 08:19:10 UTC
The term light year is confusing for many people because it actually measures distance instead of time.
Simply put, one light year is the distance that light can travel in one year. And since light travels at an amazing 186,000 miles per second, a light year is an extremely long distance - 5,865,696,000,000 miles to be exact!
We typically use the term "light years" to describe the distance between stars, galaxies, and other objects that are humongous distances apart. For example, the closest star to the earth, not counting our own sun, is Alpha Centauri. This star, our solar system's closest stellar neighbor is 4.3 light years away from the earth!
aaron
2011-05-30 08:24:48 UTC
The distance that light travels in a year-definition only
1 Light Year = 63239.2493 Astronomical Unit
astronomical unit- is the distance between the earth and the sun
astronomical unit is equal to about 149,597,870.7 kilometers (92,955,807.27 miles)
Yahoo rules
2011-05-30 08:20:06 UTC
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.
Sagorika
2011-06-02 11:00:47 UTC
Distance travelled by light in 1 year !!!!!!
?
2011-06-02 06:39:25 UTC
Light travels at the speed of 300,000 km/hour. So a light year means distance traveled in a year.
nabila
2011-05-30 15:26:10 UTC
the distance travelled by light in one year is called as light year.
?
2011-05-30 08:34:47 UTC
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.
?
2011-05-30 10:36:25 UTC
a light year is the term used for expressing large distances .
It is the distance travelled by light( in vacuum ) in one year.
Ga!
2011-05-30 08:19:28 UTC
It is defined as the distance (length of path) travelled by light in 1 year in Vacuum.
nitish
2011-05-31 08:02:33 UTC
Light year is the distance traveled by light in one year.
1 light year = 9.4605284 × 1015 meters
mukulfaiz
2011-05-31 00:16:25 UTC
distance travelled by light in an year.
anonymous
2011-05-30 09:45:59 UTC
it is the distance travelled by light in one year
kuttandra n
2011-05-30 08:38:18 UTC
Just like Kilo meters to measure distance, Light year to measure very very long distance, speed of light.i e Number of kilometer light travelled by light in one year ,is one light year.
anonymous
2011-05-30 12:42:27 UTC
the time light use to travel in a full year
Roy
2011-05-30 08:18:00 UTC
A light year is the distance liven travels in a year. It is a measure of distance rather then a measure of time.
sal
2011-05-30 08:19:11 UTC
how fast light travels in a year
ⓘ
This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.