How far is a light year?

Question: How far is a light year?

We know that the speed of light is 186,000 miles per second as explained here: How Fast is the Speed of Light?

A light year is defined as how fast light can travel in one year.

Total seconds in a year is 60 seconds x 60 minutes x 24 hours x 365 days = 31,536,000.

31,536,000 seconds x 186,000 miles = about 5,870 billion miles.

Thus, the answer to your question, "How far is a light year?" is about 5,870 billion miles.

How far?
Learn about the distances of other things. How far is that anyway?

Explore the universe!

How Fast is a Knot?
How Fast is a Knot? Find out how fast a knot really is!

Helpful online calculators about all kinds of stuff.

Copyright  |   Privacy Policy  |   Social Media  |   Disclaimer  |   Directory  |   Contact  |   Advertise  |   Search