How Long Is A Light Year In Days

Sedna is currently 0 52 light days from the sun.

How long is a light year in days. That is a 6 with 12 zeros behind it. 1 year x 365 days year x 24 hours day x 60 minutes hour x 60 seconds minute 31 536 000 seconds. The nearest star is 4 22 light years away. If the observer is traveling at the speed of light then by definition it takes one year.

Because it includes the word year the term light year may be. Using the common physics formula distance equals rate times time or d r x t you can calculate how long a light year is. Since speed of light is represented by the variable c. A light year equals about 9 46073 1012 km 5 87863 1012 miles or 63 241 astronomical units.

The oort cloud is thought to extend between 41 and 82 light weeks out from the sun light year. How can this be. A light year is a standard of measurement used by astronomers to describe huge distances in the universe. As defined by the international astronomical union iau a light year is the distance that light travels in vacuum in one julian year 365 25 days.

One light year is about 6 trillion miles 9 trillion km. Light year speed of light x one year. To obtain an idea of the size of a light year take the circumference of the earth 24 900 miles lay it out in a straight line multiply the length of the line by 7 5 the corresponding distance is one light second then place 31 6 million similar lines end to end. As an example it takes 1 3 seconds for light to travel from the earth to the moon and eight hours for a space shuttle to make the same trip.

On an orbit that varies from a perihelion of 0 44 light days to an aphelion of 5 41 light days light week 7 light days 604 800 light seconds 181 314 478 598 400 m. A light year is the distance light travels in one earth year. The center of the milky way is about 26 000. Determining how long it takes to travel one light year depends in part on the speed of the observer.

The light year is a unit of length used to express astronomical distances and measures about 9 46 trillion kilometres 9 46 x 10 12 km or 5 88 trillion miles 5 88 x 10 12 mi. 1 813 10 11 km. Light travels at a speed of 186 000 miles. 1 127 10 11 mi.

If you are wondering there are just about 31 500 000 seconds in a year and if you multiply this by 186 000 the distance that light travels each second you get 5 9 trillion miles 9 4 trillion.