A light year is a unit used to measure distance in space, specifically referring to how far light can travel in one year. It's approximately 9.46 trillion kilometers or about 5.87 million miles.
At the moment, countries are a couple of light years away from where they need to be. (earthinbrackets.org)
Now, as for supplements, again consumers and retailers have traveled mental light years from where they were. (petbusiness.com)
The entire science is based on calculations that use the speed of light and we know that objects are millions of light years away. (religion.blogs.cnn.com)