To YWM 80,
I don’t understand why you are confusing the issue. My original post was answering some bored guy’s question -not defining light-years! All I am proving from Wikipedia is that light takes TIME to travel. Only things with mass will lose the concept of TIME, if they travel at the speed of light!
To all,
Go back and reread my answer to his question. You will see that what I’m saying makes sense.