Terminal 'ls' Command Help

I think (know) I did something to change what the "ls" command displays in terminal. I don't know what that stuff to the left of the file names are, and I don't want them and would like to get rid of them like it was before (before I did something I guess). I'm kind of new to terminal also.
-Thanks, Zac

Looks like you set an alias for ls. What are the contents of your ~/.bashrc and ~/.bash_profile (if one doesn't exist, don't worry about it)?