What Is A Light Year In Miles

More specifically a light year is defined as the distance that a photon would travel in free space and infinitely far away from any gravitational or magnetic fields in.

What is a light year in miles. Roughly 9 46 1012 kilometres 9 46 petametres or about 5 88 1012 nearly six trillion miles. When we use powerful telescopes to look at distant objects in space we are actually looking back in time. That is a 6 with 12 zeros behind it. A light year abbreviated ly is the distance light travels in one year.

Roughly 9 46 1012 kilometres 9 46 petametres or about 5 88 1012 nearly six trillion miles. One light year is about 6 trillion miles 9 trillion km. But a light year isn t. Therefore a light year is exactly 9 460 730 472 580 8 kilometers.

Looking back in time. A light year is the distance a beam of light travels in a single earth year or 6 trillion miles 9 7 trillion. How can this be. A light year is 5 878 625 373 183 6 miles.

A light year is the distance light travels in one earth year. The year used by the international astronomical union is 365 25 days. 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. 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.

Because it includes the word year the term light year may be. A light year abbreviated ly is the distance light travels in one year. Light travels at a speed of 186 000 miles. Lightyears to miles formula.

And a light year is 63 241 astronomical units 1 astronomical unit or au is the average distance from the earth to the sun. A lightyear is the distance that light travels in one year. Since there are various definitions for the length of a year there are correspondingly slightly different values for a lightyear. A light year is the distance that light travels in one year.