In a vacuum, light always travels at the same speed, approximately 3 x 10^8 meters/second.
In a year, there are 31556736 seconds, so light travels 9.5 x 10^15 meters.
That unit is called a light year.
More details are available at:
http://en.wikipedia.org/wiki/Light-year
Yes, they travel some fast!
if you're asking "how long in years to travel 1 light year" you would have to know how fast you are traveling. a light year is a measure of distance that's equal to approximately six trillion miles...
lighting travels at the speed of light
No. A light year is the distance light travels in a year, and nothing can travel faster than light. Therefore, the quickest that anything could travel a light year is 1 year. A comet travels much slower than light.
No. The distance from the Earth to the Sun is 8 light-minutes.It takes light 8 minutes to travel from the Sun to the Earth, in other words.The distance that light can travel in one year is one light-year.
Approx 9.46 trillion km.
300000 km/second
Yes, it is - in vacuum.
Yes, they travel some fast!
if you're asking "how long in years to travel 1 light year" you would have to know how fast you are traveling. a light year is a measure of distance that's equal to approximately six trillion miles...
It would take light one year to travel one light year. (The answer comes from the definition of a light year.) We cannot go that fast; only light can. Relativity confuses matters slightly. If you travel one light year at the speed of light, an outside observer would say it took you one year. You yourself would say the trip was instantaneous. Since, as noted above, you can't possibly go that fast, if we say that you were merely very very close to the speed of light, you'd say it took a much shorter time than one year; the exact length would depend on exactly how fast you were going. (Even more confusing: by your measurements), you wouldn't have gone a light year at all, but some shorter distance. Again, exactly how short depends on how fast you were going.)
Copper is opaque to light - light can not travel though it.
the speed of light
it can travel from 380nm [nanometres] to 740nm
Darkness is the absence of light and will therefore travel at the speed of light (6x108m/s)
It can travel about 5.86 trillion miles in one year. This is a light year.
yes