ESL Videos

How Long is a Light Year?

Views: 93
Get Embed Code
This is an excellent demonstration by NASA of just how long a light-year is. A light-year is a measure of distance, not of time. It is the distance that light travels in a year. It's a pretty long distance...

You need to be a member of myEnglishClub to add comments!

Join myEnglishClub

E-mail me when people leave their comments –