Scientists don't measure the distance light travels in one year. They calculate it by measuring the speed of light. The speed is 300,000,000 meters/sec. and can be measured in the laboratory with a rotating mirror apparatus. To get the distance traveled by light in one year you multiply the speed (above) by the number of seconds in a year. The answer will come out in meters and is also called one light year.
A light year is a measure of how far light can travel in one year. It is a phenomenal distance, and is used to describe how far away stars are from us.
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.
Not really. A light year is a measure of distance. It is the distance light can travel in one earth year, about 6 trillion miles
A light-year is a measure of distance, not time as many people mistakenly believe. One light-year is the distance light can travel in one year in the vacuum of space. One light-year equates to 5.8785 trillion miles.
A light-year is a measure of distance, just like a foot, a meter or a mile. A measure of distance is not considered to travel. If the question is how far light travels in one second, the answer is 299,792.458 kilometers, or about 186,286 miles. The speeds noted refer to light moving in a vacuum.
They use a complicated kind of trigonometry, looking at the apparent distance, light, and other different factors to calculate it.
They use light years, the distance light can travel in 1 year. It's equivalent to 5878499810000 miles.
One light year is the distance that light travels in one year, which is approximately 5.88 trillion miles. Therefore, to travel a distance equivalent to 2.5 Earth years, you would need to travel about 2.5 light years, which is roughly 14.7 trillion miles.
scientists use light-years to measure long distances in space. a light year, (abrviated ly) is the distance light can travel.
It allows a scientist to measure the wavelength of light.
A light year is a unit of distance, not time. It represents the distance that light travels in one year. So 6300 light years is the distance that light would travel in 6300 years on Earth.
587 light years is a unit of distance, not time. It represents the distance that light travels in 587 years.