Put simply this is the DISTANCE traveled by a beam of light through vacuum in one earth year.
For instance if you go outside and shine a torch up into the night sky, a the light form your torch will shoot up into the sky at the speed of light which is:
299,792,458 metres per second.
Thus, after one hour the light form your torch will have traveled 1,079,252,848.8 kilometers.
and after one year it will have traveled 9,460,730,472,580.8 kilometers
We use light years to measure distance in astronomy because the numbers are so big.
It is easy to understand that one of the nearest stars (apart form the Sun) to us is Sirius and this is 8.6 light years away (the light we see now left it 8.6 earth years ago), while Betelgeuse is 427 light years away.
More information:
Light travels at the rate of:
186,000 miles per second, or
11,160,000 per minute, or
669,600,000 miles per hour, or
16,070,400,000 per day, or
5,865,696,000,000 miles in one year (one light year).
The distance light travels in one year. 1 ly = 5,874,601,673,407.3 miles One light year is the distance light can travel in one year.
a quasar 10 billion light years away; if you looked at it, you would see it as it was 10 billions years ago
The number of miles light travels in one year - 9,500,000,000,000 km or 5,865,696,000,000 miles.
It's a distance , and it looks 5.879x10^12 miles long.
"One light-year is the distance that all forms of electromagnetic radiation,
including light, travel through vacuum in one year."
A light year is the distance light travels in one year. Note that it is a unit of DISTANCE
Distance covered by light in one year.
Regulus or Alpha Leonis is approximately 77 light years away. Light reaching Earth in 2010 would have left Regulus in 1933.
A light-year is a measure of distance that a photon of light will travel in one year .
The light-year is the distance light travels in a year. Since this sometimes causes confusion, please note that a light-year is a unit of distance; NOT a unit of time. A light-year is approximately 9.5 x 1012 kilometers. (A light-year is defined to be exactly 9,460,730,472,580,800 metres.)
The correct abbreviation is LY.- A kilo light-year is KLY.(1,000 light-years).- A mega light-year MLY.(1 million light-years).- A giga light-year is GLY.(1 billion light-years).
A light year is much larger. 1 light year = 63,240 Astronomical Units
1997 xxx
9.4607 × 10^12 km
i just got a goldfish from my friend and its a year old ..it looks light brown and big eyed .
"light-year"
Regulus or Alpha Leonis is approximately 77 light years away. Light reaching Earth in 2010 would have left Regulus in 1933.
A light-year is a measure of distance that a photon of light will travel in one year .
The distance light travels in a year is called light-year
A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles. A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles.
A light year is how far light will travel in a vacuum in one single year(Julian) The Value of a light year is, 9,460,730,472,580.8Km.
You will need to call Browning and ask them to look up the serial number.
A light-year is the distance light can travel in one year. Light travels at 186,000 miles per second. Multiply that by 3600 seconds in an hour and then by 24 hours in a day and 365 days in a year and you will get the distance in one light-year.A light year is defined as 9,460,730,472,580,800 meters exactly, derivedfrom the distance that light travels in vacuum in one Julian year.
The light-year is the distance light travels in a year. Since this sometimes causes confusion, please note that a light-year is a unit of distance; NOT a unit of time. A light-year is approximately 9.5 x 1012 kilometers. (A light-year is defined to be exactly 9,460,730,472,580,800 metres.)